Individual weekly pregnancy calendar. How to calculate the gestational age by the first movement of the fetus

The most detailed pregnancy calendar

The happiest time in the life of every woman - pregnancy - is divided into time stages: trimesters, months, weeks. Each of these units of time has the peculiarities of its course - both in the body of the expectant mother and in the body of the future baby. We will talk about all this in the most detailed and understandable way.

Living stories to help

In addition to medical (gynecological) information from experienced obstetricians, we will share with you the real stories of thousands of Babyblog mothers on the pages of our calendar. They are equipped with expressive photographs, ultrasound images, descriptions of sensations in one or another obstetric week of pregnancy. We will also give you tips and recommendations for each of the stages on the road to a miracle.

On the verge of a miracle

In order to receive a newborn carefully wrapped in a diaper for the first time, to hear its first cry, to smell its smell, you have to climb the happy ladder of forty steps - forty weeks. Not one of them stumble, do not grumble about fate, do not complain about ailments. On the top step of this amazing staircase, you will spread your wings and go on a magical flight of happy motherhood. The miracle is close at hand!

Listen to Experienced Moms

It is very important at the time of bearing a child not to worry once again, not to quarrel with loved ones, not to allow phobias and stress. It is for this purpose that each week of pregnancy in our unique calendar is accompanied by useful tips and good recommendations from experienced mothers who have gone through this path more than once. You will be calmer when at each time stage you can find out the experience of other mothers in this or that issue of your well-being and the healthy course of pregnancy.

How is the pregnancy going?

In the first obstetric week of pregnancy, the female body begins to prepare for possible fertilization, which will occur later.

In the second week, the "leader" in this cycle is determined - the egg, which will give rise to a new life.

As a rule, at the end of the second - the beginning of the third obstetric week of pregnancy, fertilization occurs - the fusion of a mature egg with the most nimble and persistent sperm from a huge number of applicants. As a loving man completely dissolves in the object of his passion, so the spermatozoon dissolves inside the parent egg. The genetic information of the parents is combined. Now a new life exists!

At the fourth week, the baby is a lump of rapidly dividing cells. When viewed under high magnification, the embryo resembles a raspberry.

At the fifth week of pregnancy, the laying of the most important systems begins. Now the heart, blood vessels and respiratory system are being formed - something that is vital for independent existence.

Next week, the future baby has a hint of arms and legs, separate parts of the inner ear and larynx are formed.

At the seventh week, the fetus actively develops the brain, the gastrointestinal tract begins to form, and the lungs form.

In the eighth week, the great sculptor - nature is engaged in fine work. Ears, nose and upper lip are now formed, as well as fingers on the hands.

At the ninth week of pregnancy, the back of the embryo will begin to straighten, and the tail will “dry out”. The baby's brain develops at a tremendous pace.

The laying of milk teeth begins next week. The embryo is now surrounded by amniotic fluid, protecting it inside from shock and shaking.

At the eleventh week, the unborn baby already has sexual characteristics, and with the help of modern equipment, future parents can now find out who is inside - a charming girl or a strong little boy. In addition, the color of the eyes is determined in the fetus.

By the twelfth week of pregnancy, the future baby has practically formed all the systems of the body. In the remaining time, they will grow and develop.

The thirteenth week ends the first trimester of pregnancy. The placenta is fully formed. Now she will be responsible for the delivery of nutrients and oxygen from mother to baby.

At 14 weeks, the baby is covered with a gentle fluff - lanugo. It retains a cheese-like lubricant, which in turn protects the baby from the surrounding waters.

It has been proven that already at the 15th week of pregnancy, the baby's tiny heart passes more than 20 liters of blood per day. The skin of the belligerent is thin and red, it is still so different from a well-fed baby.

At the sixteenth week, the fetal head is no longer so pressed to the chest, it gradually straightens. The muscles of the face are developed, so the child can wink and frown.

At week 17, "brown fat" begins to be deposited, which is necessary for the body's heat exchange. But there is still no subcutaneous fat.

At the 18th week of pregnancy, the baby can already hear you, as the structures of the middle ear are being improved. It's time to talk to the child and sing children's songs to him.

The following week, the limbs grow and become more proportional.

At the twentieth week, the puffer is a miniature man - with a delicate fluff on his head and tiny nails on his fingers and toes. He has a lot to do - the baby yawns, sucks his fist, somersaults.

In the twenty-first week, blood cells begin to be produced, which are responsible for protecting the body from infections. Thanks to the developed papillae on the tongue, the fetus feels the taste of the surrounding waters.

At week 22, the baby strokes his arms, legs, face, sucks his finger and pushes off the walls of the uterus with his legs.

At the twenty-third week, the fetus begins to store subcutaneous fat.

At the 24th week of pregnancy, the baby becomes larger and more well-fed. It occupies almost the entire uterus, it becomes more and more difficult to tumble.

The next week, bones are strengthened, joints are formed.

At 26 weeks, the baby is able to open his eyes.

The third trimester starts with the twenty-seventh week. A baby weighing approximately 1000 g has all the main systems working, although their development has not yet been completed.

At week 28, the brain grows, new cells and nerve connections are formed.

At the twenty-ninth week, the baby has already learned to more or less regulate its own body temperature.

At the thirtieth week, the baby's eyes are wide open, he reacts to the contrast light penetrating through the mother's tummy.

The following week, the baby reacts to loud noises and pain. You can feel it move as the doctor feels your abdomen.

At 32 weeks of gestation, the baby hears perfectly what is happening outside the tummy. He recognizes the beating of his mother's heart, bowel movements and the sound of blood flowing through the umbilical cord. That is why the baby calms down after birth if the mother presses him to her chest, because he hears the usual sounds of her heart.

At 33 weeks, the baby still has enough space for movement, but every day the space of the temporary house - the uterus becomes more and more cramped for him.

By the next week, subcutaneous fat is already a tenth of the baby's weight, which gives the skin of the fetus a smooth and pinkish tint.

From week 35, the baby will gain 200-220 grams weekly to his current weight (approximately 2550 g).

The next week, the baby's face became smooth, plump cheeks appeared.

At week 37, the baby is ready for birth and has taken its final position in the uterus.

At 38 weeks, the baby lost lanugo. There is less original lubricant.

At the thirty-ninth week of pregnancy, the walls of the uterus contract from time to time, "rehearsing" childbirth.

At the fortieth week, fetal movements slowed down in anticipation of birth. His intestines are filled with original feces (meconium). The appearance of the crumbs into the world should be expected at any time.

At 41 weeks of pregnancy, all organs and systems of the unborn child are ready to start independent work at any time.

At 42 weeks, the baby grew long nails on all fingers, hair. His eyes are open, he is becoming more active again.

In our calendar, each week of pregnancy, we will consider in as much detail as possible. Welcome!

Read this article:

The pregnancy calendar is a kind of list of all the important moments of pregnancy. You can also use it to calculate the due date. In order to calculate when a long-awaited event will happen, you just need to:

Remember the date of the last menstruation, for example: December 17, 2015.
Then the most likely date of conception: January 1, 2016.
Estimated date of birth of the child: September 22, 2016.

You can determine the expected date of birth yourself using a simple calculation scheme. To do this, remember the date of the first day of the last menstruation and add 280 days to this number.

Pregnancy calculator online

Especially for you, dear future mothers, the site has developed an online pregnancy calendar. With it, you can easily find out the date of the expected birth, the age of the baby in the tummy, how many days are left until a significant event, and also find out who your baby will be according to the zodiac sign.

First trimester of pregnancy

1st week. Now it is still difficult to talk about pregnancy as such. But the beginning of the gestational age is considered to be from the first day of the last menstruation, since at this time the egg of the expectant mother begins to mature. At the same time, the hormonal background is changing, such changes in the body occur in order for the egg to simply accept the male principle.

2nd week. During this period, among all the eggs, the one that becomes the leader appears. And in a couple of days the bubble will become larger. Then it will burst and the egg will enter the fallopian tube, where it will meet with the sperm. It is easy for a woman to learn about a gap, during this period there are unpleasant sensations in the lower abdomen. This gap is called ovulation. You can keep an ovulation calculator, then it will be easy to calculate exactly when it should come.

3rd week. According to the pregnancy calculator, you have already ovulated and fertilized. This week, the embryo proved its right to exist. At this time, germ cells, the head and coccyx-tail of the baby begin to form. The embryo is implanted in the uterine cavity.

4th week. You can do a test. You already have enough human chorionic gonadotropin. The placenta, umbilical cord and yolk sac begin to form. The height of the child is 0.2 mm, and the weight is 0.5 g.

You have probably already noticed the physical changes that have happened to you, namely:

lack of menstruation;
the chest is compacted, its sensitivity increases;
sometimes you may feel sick, especially morning sickness;
change in taste preferences;
strong sensitivity to odors, sometimes to the point of irritation.

5th week. This time is considered the end of the term of the first month. The baby is still very small, its length is from 1.5 to 2.5 mm. He feeds on his mother's blood. His heart began to beat. Gradually, the chord develops, which will later become the spine, blood vessels begin to depart from the heart, and the nervous system and brain are not inferior to them in development. Now on the pregnancy calculator, you can note that your baby is already clearly visible where the arms, legs and head will be.

Many women are already beginning to psychologically feel that a small miracle is growing in them, against the background of this and against the background of a change in hormones, their mood often changes. The emotional state is often accompanied by: nausea, frequent urination, drowsiness. However, it happens that some future mothers are lucky, and they don’t feel anything like that.

6th week. The embryo develops in the formed fetal bladder, which is now the protection of the child from everything. The heart has already formed and beats at a frequency of 140-150 beats per minute. The length of the embryo is 4-5 mm, weight - 1.3 g. The bases of the legs and arms appear, and small depressions on the head, in which eyes are then formed. The rudiments of the intestines, liver, kidneys, and the immune system are formed.

Throughout the entire pregnancy, you should be very vigilant. But this week is even more so, as you are just getting used to your special state. Go to bed earlier, rest more often, stop walking in heels.

Development of pregnancy in the second half of the first trimester

7th week. On the pregnancy calculator, the seventh week is the middle of the second month. It is impossible to consider it the easiest for the expectant mother. You still have toxicosis, heartburn and bloating have been added to it, your chest has become even larger, and the halo has darkened.

The length of the embryo is 6-9 mm, and the weight is approximately 1.8 g. The head is very large, much larger than the body, and is lowered towards the chest. The arms and legs are already visible. The oral cavity is formed. Eyelids and ears are also formed. The nervous system has practically formed. The heart pumps blood.

8th week. If you keep the calculator not by week, but by day, it turns out that your baby is already 50-56 days old. His height is 1.27 cm, and his weight is 2.1 g. He begins to resemble a baby. The heart completes its formation, its connection with large vessels occurs. The stomach takes the correct position and is in its place. The face begins to form. If it should be a boy, then the testicles are formed.

9th week. The embryo is already almost 3 cm, and its weight is 4 g. The cerebellum is forming. Facial features are slightly different, fingers have formed, and now the baby can bend them. Bones and joints are formed.

If you follow your pregnancy week by week, you should know that this is the time when a large number of miscarriages occur. Such a misfortune happens due to the fact that all the functions of the corpus luteum are taken over by the placenta. Of course, if it developed without pathologies, then everything should be fine. But it's best to keep yourself stress-free.

10th week. The child is already moving his limbs, although you do not feel it yet, and may squint, swallow. Nail plates are formed on the fingers, and the upper lip and auricles are formed on the head. Milk teeth begin to form (so eat more foods that contain calcium) and genitals.

You, most likely, already have a hard time buttoning up your trousers - you have gained weight. If you do not want to gain too much during pregnancy, but also feed your baby well, then you should eat a balanced diet.

11-week. Fetal growth - 6 cm, weight - 8 g. The baby has grown significantly. He has already formed eyes, ears, nose, mouth. The umbilical cord has formed. Most likely, he already feels with his palms, since his nervous system is practically developed.

It is worth noting on your pregnancy calculator that in the period from 11 to 13 weeks you should visit a gynecologist in order for him to refer you for tests, such as:

blood chemistry;
analysis for cytology and flora;
if necessary, additional tests.

The first ultrasound is just designed for such a period. It can reveal fetal pathologies and show how many children you will have.

12th week. The height of the baby is 8 cm, and it weighs 14 g. Although the child is still very small and you do not feel it, he actively moves his arms and legs. The mouth can already open and close. The body becomes more like a human body. The sex has not yet been determined, but the fetus can already urinate.

If you follow the pregnancy week by week, then the first trimester is coming to an end. Some people have already lost their nausea. You still have sharp mood swings, but gradually it stabilizes. Remember: any pain, heaviness in the lower abdomen, copious discharge from the vagina should alert you. In this case, you should rest. And if there is spotting, then immediately consult a doctor. This is a symptom of a miscarriage.

13th week. The baby is still quite tiny: height - 10 cm, weight 15-20 g, but he has already formed all the milk teeth, the intestines begin to contract periodically, the brain takes on the likeness of the brain of an adult. The kid can shake his head.

You finally lost morning sickness, nervousness. You feel much better. Perhaps you want to go back to work. With peace of mind, you can do it. The main thing - do not forget about walking in the fresh air, walk for at least two hours, walk a lot.

Second trimester of pregnancy

The pregnancy calculator shows that the second period of pregnancy has begun.

14th week. The baby has almost all the organs formed, then they will grow with his growth. They begin to perform their functions. The child tries to show the first emotions. Eyebrows begin to grow and the first fluff appears. The placenta nourishes and protects the baby.

Since your uterus has already grown a little, your stomach has become noticeable. She also began to put pressure on the internal organs, so you most likely want to go to the toilet more often, because there is a lot of pressure on the bladder.

15th week. If you touch the abdomen, you will feel that the bottom of the uterus is located 7 cm below the navel. The height of the baby is 13 cm, and the weight is 50 g. The skin of the child is still very thin. This week, the color of future hair begins to be determined. The child can distinguish sounds, listens to his mother's heartbeat, it calms him down. The water in the bubble changes all the time, so in the middle everything remains in a sterile state.

Most likely, you have a dark line on your stomach and darkened halos. Do not worry, all this will pass after childbirth.

16th week. There is a formation of lanugo all over the body of the baby. He has all the signs of a person, down to the eyelashes. Turn on classical music for your child, because he already hears, and pleasant music has a good effect on development.

The pregnancy calculator tells you that a miracle can happen this week and you will finally feel your baby move. Perhaps your memory has deteriorated, but you should not worry about it, the reason for this is the game of hormones.

17th week. Height - 15-16 cm, weight - 140 g. The baby is covered with fluff, the bones begin to harden. Blood vessels are still visible through the skin. The chest rises and falls.

The uterus grew even more. You continue to go to the toilet frequently. Try to avoid people who smoke, smoking is very harmful to the baby. The child takes a lot of your trace elements, including red blood cells, so anemia may occur, then seek help from a doctor.

Second half of the second trimester of pregnancy

18th week. Height - 20-22 cm, weight - 230 g. The growth of the brain continues. Fingers and toes are formed, bones are getting stronger. The placenta serves as a barrier from all troubles. The heart beats even faster, speeding up blood circulation.

If you keep your personal pregnancy calculator, then take it in your hand and mark this week with a red pencil, because this week you can go for an ultrasound and find out the sex of the baby. Now it should look something like in photo 1.

19th week. The child is 24 cm long and weighs 300 g. The baby excretes more and more urine, which then enters the amniotic fluid. He has nephrons. Next, sensory perception develops.

There are many changes in the physical condition of the mother:

the amount of secreted whites increases;
indigestion increases;
heartburn appears;
legs may swell;
pigmentation appears.

But all this fades when you feel the baby move.

mid pregnancy

20th week. A birth lubricant begins to appear on the skin of the child, it protects the still very thin skin of the baby. The first feces produced in the intestines is meconium. Height - 26 cm, weight 320 g.

Your belly keeps growing and your uterus keeps growing, so it might be hard for you to breathe. Your best bet is to sleep on hard surfaces with your feet elevated.

21st week. The child is already swallowing anatomical fluids and may hiccup. The bone marrow develops. Height - 28 cm, weight 400 g.

Already at this time, you may begin to secrete colostrum. Hemorrhoids may appear.

22nd week. The child's skeleton is developing. In your stomach, it moves as it wants: up and down and across. Touches the face, legs, tummy with hands. The skull bones harden.

Choose clothes that will not put pressure on your stomach and prevent you from moving. Do not sit for a long time, as this position is not the best for your back and blood circulation.

23rd week. Height - 30 cm, weight - 530 g. The head has become more proportional in relation to the body. The lungs continue to develop. The spleen and endocrine glands began their work.

You may have improved hair condition, but at the same time, they could begin to grow all over your body. After childbirth, they will disappear. Don't forget about your hygiene.

24th week. Height - 31 cm, weight - 600 g. The formation of the cerebellum is completed. If childbirth begins, then there is a chance that the child will survive, since almost all organs work. The baby is trying to breathe.

You may already be experiencing something similar to contractions, they are called Braxton Hicks contractions. Don't worry about them, they will pass quickly.

25th week. Height - 31 cm, weight - 700 g. The lungs began to secrete surfactant, which allows the pulmonary vesicles not to stick together. The child develops muscle mass. The bone marrow takes on the function of the main circulatory organ.

Your uterus is 25 cm above your womb and is now the size of a soccer ball. It might be dry skin.

26th week. The height of the child is 33 cm, weight is 880 g. This week the brain connects with the adrenal cortex and the endocrine system. The pituitary gland itself produces growth hormone. The baby reacts to light, voice.

The expectant mother should sign up for prenatal courses at the maternity hospital. Try to indulge yourself in order to somehow remove the discomfort.

27th week. The kid has grown a lot. Height - 35 cm, weight - 900 g. He no longer feels as spacious in the uterine cavity as before. The child hears everything and distinguishes the voice. The most favorite for him is the voice of his mother. In boys, the testicles descend into the scrotum.

You have gained 11-13 kg. But don't worry, it's not fat. Everything will be fine after delivery.

Third trimester of pregnancy

28th week. Height - 35 cm, weight - 1110 g. The skin becomes flesh-colored. Lanugo disappears. The kid became very active. It is worth starting to count his pushes. To do this, relax and count the shocks for 10 minutes, if there are not enough of them, then count again. If there are too few or too many movements, immediately go to the doctor.

29th week. Height - 38 cm, weight - 1200 g. The child's body learns to regulate its temperature, the baby is preparing for the birth.

Relax more, please yourself with new dresses for pregnant women.

30th week. Height - 38 cm, weight - 1300 g. At this time, your baby may have turned his head down. Enough light enters the uterus, and the child already distinguishes the difference between light and dark.

Now you can take a vacation. Take care of yourself, get plenty of rest, eat plenty of fruits and vegetables.

31st week. Height - 41 cm, weight - 1600 g. If it so happens that the baby asks for the light right now, it will be considered that you have begun an early full-fledged birth. The baby is gaining muscle mass.

You have pain in your back and pelvis, as well as severe heartburn. To combat this, eat little but often, mineral water and milk also help.

32nd week. Height - 42 cm, weight - 2 kg. The child's wrinkles disappear. Now he often hiccups.

Go to the toilet more often. If you feel cramps in your legs, wiggle your toes a lot. Your gums may be bleeding. Do not worry, everything will pass after the birth.

33rd week. Height - 43 cm, weight - 2100 g. The increase in fat layer continues. The baby falls asleep and wakes up at the same time.

You may experience incontinence when you cough or sneeze heavily. The dark line on the abdomen is getting darker.

34th week. Height - 44 cm, weight - 2400 g. Hair appeared on the head, the skin became light, the nails were already long. The tips of the ears are separated from the head.

Second half of the third trimester of pregnancy

35th week. Height - 46 cm, weight - 2500 g. Now all development consists in gaining weight and height.

Watch your blood pressure. Rest more, drink less.

36th week. Height - 48 cm, weight - 2700 g. The kid is already becoming just like a baby, just a little smaller.

Lubricate the perineum with vitamin E oil so that there are no tears during childbirth.

37th week. Height - 50 cm, weight - 3 kg. Bones and cartilage harden even more. If you count the gestational age by weeks, then it is already complete.

38th week. Height - 50 cm, weight - 3100 g. The kid recovers by 23-30 g every day. The skin is cleansed of lubrication.

You may have stretch marks.

39th week. Height - 51 cm, weight - 3200 g. Vision is three-dimensional and color, the baby sees at a distance of up to 30 cm.

Your uterine fundus has shrunk, it’s hard to walk, breathe, everything is hard. Childbirth soon.

40th week. Height - 52 cm, weight - 3300 g. The child is ready to be born.

pregnancy calendars

Calculate your pregnancy calendar by week. Every week of your pregnancy from 1 to 40 weeks with details.

Pregnancy is an amazing and exciting time in a woman's life. In just 40 weeks, a whole organism is formed from one cell, capable of living in the environment. A person never again develops at such a rapid pace as in the prenatal period. Every day the appearance of the fetus changes, new organs, new abilities appear. The appearance and well-being of a woman is also rapidly changing - last month her “interesting position” was not noticeable to anyone, and today a pretty round tummy has already appeared. During the gestation of the fetus, you need to do a lot - you will have to go through more than one medical examination, pass several tests, review your menu and sleep patterns, change habits and update your wardrobe. It is better to prepare for all the changes in life in advance, and especially so that you are aware of all the upcoming surprises, we have prepared a detailed weekly pregnancy calendar.

Where does the two-week confusion come from?

Doctors in antenatal clinics traditionally count the gestational age starting from the first day of the last menstruation, despite the fact that conception occurs, according to such calculations, only in the third week of pregnancy. Our interactive calendar is built according to the same scheme - this is the so-called obstetric pregnancy calendar. There is another, much less frequently used, method for calculating the duration of pregnancy, when the day of conception is taken as the starting point. The resulting calendar, it would be correct to call the calendar of fetal development. Sometimes this method is reflected in the conclusions of obstetric ultrasound, where it is possible to determine the life expectancy of the fetus with an accuracy of one day, especially in the first trimester. As a rule, the fetal development calendar lags behind the obstetric pregnancy calendar by about 2 weeks.

It is most logical to paint the pregnancy by weeks - so you will better imagine how your baby grows and what processes pregnancy causes in your own body. Studying the weekly pregnancy calendar, you will find timely advice on how to choose clothes for pregnant women, how to avoid toxicosis, how to eat right during pregnancy. Accordingly, each week the size of the fetus and its new skills are given - you will be surprised at how much it already has, when even the tummy is not yet visible to others!

In order to automatically calculate the pregnancy calendar, you can use the calculator on the site. It is enough to enter the date of the first day of your last period, and you will receive a weekly calendar of your own pregnancy. Perhaps it should be interesting for a pregnant woman to find out every week about how her baby's life is going, but you should not take the given terms literally. Keep in mind that the duration of pregnancy, as well as the rate of fetal development, is always individual and may differ slightly from the data provided by the interactive pregnancy calendar. The following pattern is characteristic - the longer the menstrual cycle, the longer the pregnancy lasts.

Questions for the article

Gram? Weight before pregnancy 80 kg, now 82.700. And seven weeks ago was ...

They said. And now I wonder))) what? ...

Estimated date was 04.07.17. But I still haven't given birth and nothing...

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fetus. This is fine. Sometimes there are imperceptible shocks. I have...

I did 3 tests, all 3 showed a weak second strip, the next ...

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Date of conception - 03/15/2017. HCG 04/06/2017 - 6145.2 mIU / ml. At the same time, less than 48 ...

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Pain began in the area of the pubic bone when walking and when ...

The second one is bright. And in the evening, spotting spotting a little ...

September, in October they are not) What is my week? How to calculate? ...

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1.00-5.00 and immature granulocytes 0.3% ref. interval 0.0-0.2. What is...

Vozmojno chto ya beremenna?i esli da ,to kakoy srok?pojalusta otvette esli mojno?...

Menstruation 07/19/20015. Thank you!...

Detachment of the placenta. If I understand correctly, the embryo does not receive enough ...

The previous children also had a tone and the doctor constantly scares me ....

(there is no year 16) PERSONAL PREGNANCY CALENDAR FOR ...

Weeks! a slight runny nose, tickle in the throat and weakness! isn't it like...

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11/28/15 hCG showed 11564, which corresponds to 4 weeks of pregnancy, ...

At 6-7 weeks there was a threat of miscarriage, with a second pregnancy it can ...

Years, the cycle was approximately 34-35 days, but not exactly. pregnancy on...

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Regular. Now the delay is 7 days. Tests neg. On cycle day 16...

Accounting for pregnancy with a weight of 76.4 kg (term 5-6 weeks). Then I suddenly...

Menya.vozmojno beremennost v etom mesyace?i chto mojno zdelat zaranee chtob eto ne sluchilos?...

The beginning of menstruation on 09/02/15, in fact, conception occurred from 3 to 5 ...

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Praise and accept the likeness of the world? The date of the remaining months is 01.07.12....

Pregnancy is a long-awaited and desired event for many women. And now it will be interesting for you to find out everything about your situation: how pregnancy develops by weeks, what happens in the body. And it is with the help of the pregnancy calendar that you can do this very quickly and easily.

Pregnancy Calendar is a convenient and useful service for future parents of moms and dads, which will tell you in great detail about pregnancy by weeks. He can be your companion throughout the entire period of pregnancy up to the birth itself.

Pregnancy is divided into 3 trimesters:

First trimester - 1-13 weeks after conception
Second trimester - 14-26 weeks
Third trimester - 27-40 weeks

How does the fetus develop during each trimester? Our pregnancy calendar will give you the answer.

Why you need a pregnancy calendar

The pregnancy calendar will tell expectant mothers about how their baby changes and grows at one time or another, how its organs develop, how the baby gains weight. Our pregnancy calendar will tell you what to do and what to abstain from at each stage of pregnancy, which doctors to visit, how to eat and what lifestyle to lead so that your baby is born healthy.

Also, our online pregnancy calendar will help you find out in which week with the help of ultrasound you can determine the girl you have to be born or the boy.

It is this weekly pregnancy calendar that gynecologists use when determining the age and development of the fetus. But there is also the age of the fetus, which differs from the menstrual period of pregnancy by 2 weeks.

In addition, this online pregnancy calendar allows expectant mothers to communicate and share their feelings and impressions with friends in an interesting position every week of pregnancy. Leave your comments and you will find out who has the same feelings and what they can mean.

But you need to know that the body of each pregnant woman is different, and our calendar does not take into account the individual characteristics of the menstrual cycle, so the calendar contains general information for everyone. All dates are approximate, as the length of the menstrual cycle varies from woman to woman and can vary, as a rule, from 24 to 36 days. In addition, you need to take into account the fact that the cycle may be irregular.

Reviews

Galina Chalay
I approached the moment of conception very consciously and, of course, I take my pregnancy responsibly. It is very important for me to know what happens to the baby at each stage of his development. After all, from the moment of conception, he is my child, whom I must take care of. Therefore, I always look with pleasure at the pregnancy calendar and read how my son lives in my tummy.

Natalia Semerichko
For me, the most important thing was that by reading about my week of pregnancy, I could chat on the forum and discuss feelings with other expectant mothers who are at the same time.

Maria Krylova
This calendar helped me learn a lot of useful information about my future baby. During this period, I was most interested in how he was in my tummy. After all, this was my first pregnancy. Very convenient and helpful service. Thank you very much!

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Any woman who is preparing to become a mother is looking forward to the appearance of two cherished strips on the test. After this moment, excitement and anxiety arise. Is the baby developing normally when you need to go for the first ultrasound, and, finally, when is the birth coming? All these questions can be answered by knowing the exact gestational age.

What is the gestational age?

Very often, confusion in the head of a pregnant woman arises from a misunderstanding of this term. Therefore, it is important to know when the development of the embryo begins, and when the countdown to birth begins.

The egg after ovulation (exit from the ovary) lives for about a day. It is this time that is considered the most favorable for conception. With a menstrual cycle of 28 days, ovulation occurs on the 14th day. At the time of fertilization, the sperm fuses with the egg, and a week later the developing embryo attaches to the inner lining of the uterus.

Since in most women the length of the menstrual cycle is not constant, no one knows the exact date of ovulation and conception. Therefore, all obstetricians in the world are considered to be the beginning of pregnancy on the first day of the last menstruation. After 9 months (280 days) after this day, childbirth should take place. This is the paradox: the countdown of pregnancy has already begun, but conception has not yet occurred. Therefore, the life of the embryo is less than the gestational age by an average of 2 weeks.

Methods for determining the gestational age and date of birth

All doctors in the world determine the duration of pregnancy by one main parameter (ultrasound) and two auxiliary ones (date of menstruation and examination of the pregnant woman).

ultrasound

The main method is ultrasound. It is important to remember that the accuracy of this method is maximum in the first 10-12 weeks, and then it drops. Therefore, it is ultrasound of the first trimester that is widely used to determine the expected date of birth.

Modern devices can detect a fetal egg in the uterus from 3-5 weeks of pregnancy. As the embryo grows to 3-4 mm, it becomes possible to measure its KTP (coccyx-parietal size), which serves as the basis for determining the gestational age to the nearest day. Usually, in the conclusion, the doctor indicates which period he means: obstetric (from the last menstruation) or embryonic (from the moment of conception).

After 22 weeks of pregnancy, it is impossible to accurately determine the age of the fetus. But the measurement of its main parameters (head size, femur length, abdominal circumference) allows us to evaluate the dynamics of growth. If it does not correspond to the period declared during ultrasound in the 1st trimester, then there is a possibility of fetal growth retardation syndrome. In addition, there are individual hereditary characteristics (short stature, large head), due to which, in the third trimester, the gestational age cannot be calculated by ultrasound.

Date of the last menstruation - calculation calculator

Determining the gestational age by the day of the last menstruation is the most affordable way for a woman. If the expectant mother is a happy owner of a regular cycle of 28 days, then she can independently and fairly accurately calculate the date of birth. There are special Naegele formulas for this.

PDR \u003d LMP - 3 months + 7 days

EDD - estimated date of birth
LMP - the first day of the last menstruation

For example, if the LAP was on June 15th, then PDR = June 15th - 3 months + 7 days = March 15th + 7 days = March 21st. This is the basis for determining the date of birth in all special calculators for calculating the gestational age.

Gestational age is determined by adding to the LMP the number of weeks that have passed since that day. Therefore, every woman can calculate the gestational age using a regular calendar.

When is it impossible to determine the period for menstruation?

Irregular menstrual cycle. With a cycle greater than 35 days, ovulation does not occur on the 14th day. Therefore, the Negele formula will give an inaccurate result (see).
Taking birth control. If the regularity of taking oral contraceptives is not observed, pregnancy may occur. Due to sudden ovulation, the formula for calculating the EDD is also not suitable (see).
With the threat of termination of early pregnancy. It happens that there is a threat of termination of pregnancy at the shortest possible time. Very often it is manifested by scanty spotting on the days corresponding to the expected menstruation. That is, a woman can confuse bleeding at the 5th week of pregnancy and regular menstruation, and will not even guess about her interesting position. In such cases, the period is determined using ultrasound.

Examination of a pregnant woman

The registration of each pregnant woman in the antenatal clinic begins with an examination. Determining the size of the uterus and the height of its bottom (that is, the upper part) can provide indicative information about the gestational age. This method is not 100% accurate. After all, the individual location of the uterus, fibroids and a full bladder can make it difficult to examine. A multiple pregnancy is associated with a large increase in this body.

HCG level

Already 8-10 days after conception, the B-subunit of hCG is determined in the blood of the expectant mother. This hormone appears during pregnancy and doubles every 2-3 days (see). It is possible to judge the gestational age by its level only indirectly.

Firstly, the hCG rates for each week of pregnancy have a large range.
Secondly, its level increases with multiple pregnancies and some anomalies in the development of the fetus. Therefore, it makes no sense to focus on this hormone when calculating the gestational age by weeks, when more accurate methods are available (ultrasound, for example).

Date of first movement

It is believed that nulliparous women feel fetal movements from the 20th week of pregnancy. Multiparous can feel them already from 16-18 weeks. In fact, it all depends on the individual characteristics of the mother and child, the thickness of the fat layer on the pregnant woman's abdomen and on her desire to feel the tremors. In addition, intestinal peristalsis is often taken as the first movement. Therefore, you should not rely on this indicator in calculating the gestational age.

How to determine the gestational age during IVF?

With in vitro fertilization, many women doubt how to correctly count the weeks of pregnancy. After all, an already developing embryo is planted in the uterine cavity. But regardless of the method of fertilization (naturally, sperm insemination or IVF), the gestational age is determined from the first day of the last menstruation. The only exception can be considered IVF with a menstrual suppression protocol (superlong protocol). In this case, the period is counted from the day of embryo transfer with the addition of two weeks.

Why do doctors determine the exact gestational age?

To assess the rate of fetal development
To determine the date of birth
For screening for chromosomal mutations (Down syndrome, etc.)
To determine the viability of a child in preterm birth

The main goal of determining the gestational age for the expectant mother is to tune in to the upcoming birth of the baby and get acquainted with information about intrauterine development by weeks.