Online pregnancy calculator by week by date of last menstruation. What a woman feels during pregnancy, fetal development by week Interactive weekly pregnancy calendar

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:

1. First trimester - 1-13 weeks after conception
2. Second trimester - 14-26 weeks
3. 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 about my future baby. useful information. 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. Thanks a lot!

Send your feedback about the Pregnancy Calendar to [email protected] website

Having discovered that a long-awaited pregnancy has come, many women experience a surge of enthusiasm and at the same time a desire to learn as much as possible about their new condition. Since changes in the body of a woman who is expecting a baby occur constantly, it is very convenient to calculate the weekly pregnancy calendar and monitor your condition by referring to it.

Calculate pregnancy calendar and gestational age

To calculate the pregnancy calendar and due date, special online services have been created. Using our calendar is simple: just enter the date when the last menstruation began in a special window - and in a few seconds you will become the owner of a personal calendar. The calculator will divide the duration of your pregnancy into weeks, indicating the time frame for each of them: the start date and end date of all weeks of your pregnancy separately.

This is very convenient and useful: referring to personal calendar, you can adjust your lifestyle and nutrition, taking into account the needs of the body of the mother and child for different terms. You will also know in which of the periods the laying and development of the organs of your crumbs takes place, your own condition and well-being changes, and this will make it easier for the doctor to monitor the well-being of your pregnancy. In addition, with the help of this calendar, it is easy to figure out when one trimester of pregnancy ends and another begins.

Calculate pregnancy calendar and due date

This pregnancy calendar also allows you to calculate the approximate due date. It falls on the end date of the fortieth week of pregnancy.

Of course, absolute - up to a day - accuracy cannot be obtained with this and any other method of calculation, because the duration of the menstrual cycle for different women can vary, and the duration of the childbearing period is an absolutely individual indicator, despite the fact that there are average norms.

In any case, by calculating the weekly pregnancy calendar, you can find out what has changed in your body and what happens to your baby in one week or another, as well as when you can approximately prepare for childbirth and expect the birth of the most beloved creature in the world. !

If you have landed on our site, it means that you have new life and you are ready for new discoveries! We congratulate you on this incredible event and invite you on an exciting journey of 280 days.

Perhaps you are excited, joyful, you are overwhelmed with delight, emotions go wild and you want to shout about this fantastic news to the whole world. Or maybe you are confused, and this pregnancy was a complete surprise for you. Perhaps you are a wise mother of three or four kids, or maybe you are just getting ready to learn this sacrament. In any case, we are ready to provide you with invaluable support, spend these unforgettable forty weeks with you, open up new facets of your condition that you did not even know about, or become guides and give you the experience thanks to which you will understand that pregnancy this is the best state in a woman's life, and this time can be spent in an interesting, fun and healthy way - for you and your baby!

Pregnancy lasts approximately 9 months, or 40 weeks, or 280 days. But it is correct to calculate your gestational age - by week! Obstetrician-gynecologists start counting the gestational age from the first day of the last menstruation, since in most cases it is difficult to determine the exact date of conception. This is called obstetric gestation. The embryonic period is 14 days shorter, since conception occurs at the time of ovulation. To avoid confusion, doctors start counting only by the obstetric gestational age, i.e. from the first day of your last period. Enter your last period start date at the top of the page, and our calendar will calculate your obstetric gestational age, your estimated due date (ED), tell you how many days have passed and how many days are left.

📅 Every week, our pregnancy calendar will automatically change and show up-to-date information for your due date. We also advise you to keep your pregnancy diary on our website, where you can track your weight - weight gain charts will help you with this. You can also record important events for you - visits to obstetricians, the date of the first movement, ultrasound data, or add photos of your tummy at different times!

It's always nice to have allies in any business! So in pregnancy it is worth starting to communicate with future mothers, and it is especially interesting if they have the same gestational age as you. You can discuss any events, prepare for childbirth together, choose maternity hospitals, buy things for babies and equip rooms for babies. Believe me, you will learn a lot of new things and such relationships may even develop into a warm friendship. The geography of communication between pregnant women is quite extensive, you will probably be interested to know how expectant mothers live in other cities and even countries! To do this, join ours!

Intrauterine development of the child by weeks

What will our pregnancy calendar give you? All pregnant women, even those for whom this is not the first experience, are interested in knowing what is happening in the baby inside you. You will know when a baby is called an embryo, and when a fetus, when he has arms, legs, when his heart starts to beat and he hears your voice for the first time, and also when you finally know whether it is a boy or a girl! The calendar lists all the stages of a child's development by week. For example, you can track your child's height and weight each week.

Find out what your child looks like in each week of his development.

Each week you will be presented with unique photographs taken in utero by Swedish photographer Lennart Nilsson.

This talented photographer took his first unique shots back in 1965. He spent ten years filming the evolution of the embryo from conception to birth.

He invented various devices and achieved his goal in one of the clinics in Stockholm by adapting a microcamera and a microilluminator to the end of the cystoscope tube. I shot thousands of unique shots right in the bowels of the uterus and now you can follow the development of your baby week after week!

Change in a woman's body by week

What new things can you learn about yourself? It's no secret that every week a woman's body will begin to change. In the calendar for each week of pregnancy, you will learn about what is happening inside you, how all your organs adjust to the needs of the growing uterus, how the brain manages and controls your pregnancy.

belly growth by week

Probably, all women are interested in comparing their tummy with the tummies of other mothers at the same gestational age. Every new week you will see wonderful photos of expectant mothers, which we have selected especially for you!

Here you can get a sufficient amount of information on almost all questions that interest you. From that - "Why do I run to the toilet so often?" to “Which side is best to sleep during pregnancy?” and "Can pregnant women walk in heels?". You will understand how to eat right, what daily routine to follow, what to wear, how to cope with toxicosis, when to pack a bag for the hospital, what to buy for a newborn and much more!

Pregnancy is a time when you should not interrupt your sports, you just need to redirect them in the right direction, or if you have never thought about it before, it's time to start doing it. healthy lifestyle life. You can start practicing yoga for pregnant women and special gymnastics according to the video lessons presented in the calendar.

medical reference book

The calendar provides you with the medical information you need to help you understand the signals your body is sending you. Find out what awaits you at the doctor's appointment, understand why these checks are necessary and what questions to ask the doctor or midwife. You will be able to schedule visits to various specialists, even if your ailment seemed minor to you before. Remember, now you are responsible not only for yourself, but also for another small life, and you just need to take better care of yourself in order to prevent possible complications. Each new week you will find a new description of the norms of your baby's ultrasound, as well as an exciting video of this study.

In anticipation of a child, an individual pregnancy calendar is useful, and sometimes even necessary. It allows a woman to know how the fetus grows and develops, to monitor whether her baby’s development meets medical standards and norms, and to prepare more effectively for childbirth. In addition, the pregnancy calendar is informative, because it will be interesting for both the expectant mother and the future father to find out what the future heir or little princess is doing in the mother's womb, what the baby already knows. Therefore, it remains only to learn how to make such a calendar.

What is the difficulty?

At first glance, there is nothing complicated in counting the gestational age, and many women can even confidently say exactly when the sexual intercourse took place, which led to the conception of the crumbs. But this information has nothing to do with the correct calculation, and besides, it can confuse the expectant mother. As a result, the woman will convincingly prove to the attending physician that he is mistaken, that he thinks her term is wrong, and many questions will arise.

To avoid discrepancies, there is an obstetric system for calculating the gestational age, it is on it that the calendar is based. It should be noted that all tests that are recommended for pregnant women with reference to the term, all examinations and screenings, as well as the calculation of the date on which the estimated day of birth falls, are performed only in obstetric weeks, and therefore, from the very beginning, a woman should try to master this technique, so that there are no problems or questions.

There are two ways to create a calendar of your pregnancy - on your own or using an interactive calculator. Both methods are based on the obstetric method for determining the gestational age. Having determined the current period, you can find out on which segment of the long journey of 9 months you are.

How to count?

The menstrual cycle is different for women. One lasts 26 days, the other - 35 days, and this can be considered an individual feature over which medicine has no power. The obstetric method is based on the understanding of one simple truth - pregnancy cannot actually occur on any of the days of the cycle, except for ovulation. It is during the period when a mature oocyte leaves the follicle on the surface of the ovary, where sex cell mature in the first half of the cycle, fertilization occurs. Before that, it is impossible, because two sex cells are needed for conception - male and female.

After the release of the oocyte, it lives from 24 to 36 hours, and if fertilization does not occur during this time, the female germ cell dies, and conception in the current cycle becomes impossible.

But spermatozoa live longer than the oocyte, and therefore there are essentially two ways to carry out cell fusion.

• Ovulation has occurred, and spermatozoa were already waiting for a female cell in the genital tract (if unprotected sexual contact was no later than 3-4 days before ovulation).
• Ovulation occurred, and within a day and a half sperm arrived in fallopian tube after ejaculation as a result of unprotected intercourse.

Be that as it may, the very process of fusion of the germ cells of the parents, which gives rise to a new life, occurs only during the period of ovulation, no later and no earlier than it.

This significantly limits the possibilities for conception, but narrows the scope of searches when determining the gestational age. By default, it is considered that it happened during the period of ovulation. To determine the ovulation period, it is enough to subtract 14 from the length of the cycle.

But obstetricians do not consider pregnancy by ovulation, since this can lead to significant errors. The fact is that ovulation can happen both earlier than expected, and later. If a woman does not specifically track her, does not keep records of all sexual acts during the cycle, then the fact of ovulation displacement cannot be established in any way. Therefore, the obstetric method is used - pregnancy begins to count from the first day of menstruation, which was the last before the delay.

Important! It is necessary to take as a basis exactly the first day of the last menstruation, and not the last day of menstruation, since the cycle begins on the first day of menstrual bleeding.

Obstetric calculation does not make it possible to determine the gestational age to the nearest day, but this is not required for compiling a pregnancy calendar.

It may seem strange that the first day of menstruation is the first day of pregnancy, because the embryo did not even exist then. Believe me, there is no mistake - the obstetric period differs from the gestational period (the life of the baby from the moment the parents' germ cells merge on the day of ovulation) by about two weeks.

Every visit of a pregnant woman to the doctor begins with the question about the date of the last menstruation. This allows the specialist and the expectant mother to “synchronize watches”.

Thus, the first day of the last menstruation is the first day of pregnancy. Further, the countdown is carried out in weeks, which are no different from the calendar. The average duration of pregnancy in obstetric weeks is 40 weeks.

If you counted everything correctly, then the expected date of birth will be at the end of the 40th week.

Separately, it must be said about the obstetric months and trimesters. There are three trimesters in pregnancy, each - 3 calendar months.

• first trimester starts from week 1 and ends at week 13 inclusive;
• second- from 14 weeks to 26 weeks;
• third- from 27 weeks to childbirth.

There are more than 4 weeks in one calendar month, and this is not difficult to notice just by looking at the calendar. But the obstetric month is akin to the lunar one: it has exactly 4 weeks, and therefore your pregnancy will be 9 months in the generally accepted calendar calculation and 10 months in the obstetric term.

To determine the date of birth, you can use one of the obstetric formulas.

• To the first day of the last menstruation, nine calendar months and seven more days must be added.
• From the first day of the last period, you can subtract three months and add seven days to the resulting value.
• You can simply add 280 days to the first day of your last period.

The resulting date will be referred to as the cherished for all pregnant women abbreviation PDR - the expected day of birth. In practice, labor can begin on any of the days from 38 weeks of pregnancy to 42 weeks.

Consider an example of compiling a calendar on your own.

• A woman's cycle lasts 28 days, menstruation - 4 days, the last menstruation began on January 1, 2019.
• From 28 we subtract 14, we get the 14th day of the cycle. This means that presumably ovulation occurred on January 14, and we count the embryonic period from that day.
• To determine the duration of pregnancy, we count from January 1. We get that on the day of ovulation there were 2 weeks of pregnancy, and on the day the delay began - 4 obstetric weeks.
• To determine the due date, we use one of the above formulas and get that it is October 8, 2019.

You can buy a ready-made round obstetric calendar that will help you quickly find out the date when you should expect the birth of your baby.

Interactive calendar

An online pregnancy calculator saves a woman from independent mathematical research, which reduces the likelihood of a banal arithmetic error. Such a program works for free, and it will not be difficult to calculate the gestational age and date of birth in a matter of seconds. The calculation is based on the obstetric timing methods described above.

In a special form, you need to enter only one value - the date of the beginning of the last menstruation in the format day-month-year. As a result, a woman almost instantly receives information about how long she is with an accuracy of not only up to a week, but also up to a day, she sees the expected date of conception, the date of the PDR.

In addition, she gets the opportunity to find out what her trimester is, what sensations and symptoms may occur during this period, how the baby is developing.

Many services indicate gynecological recommendations for a given period, as well as provide a detailed and accurate list of necessary tests and examinations by weeks, months and even days of pregnancy.

With the help of the service very convenient to track changes in the body, because almost from the very beginning of pregnancy, the female body begins a systematic and gradual preparation for childbirth. Information for each week of pregnancy will be exhaustive, detailed, it will help to find answers to numerous questions that are asked by all expectant mothers without exception.

It is especially valuable that for each week the calendar will give the necessary recommendations on nutrition, intimate life, hygiene, choice of clothing, footwear, lifestyle. Some services provide an opportunity to receive online consultations from specialists.

There are also calculator applications that can be downloaded and installed on a smartphone or tablet. Such an electronic assistant, based again on the first day of your last menstruation, will make the necessary calculations, will regularly remind you of the beginning of a new week, send recommendations and useful tips relevant to your term.

There are applications and online calculators that, in addition to medical information, provide additional information about the nearest children's goods stores, pharmacies, medical institutions, and also calculate the zodiac sign of the unborn child and make up an individual horoscope for him, which can be used, for example, for choosing a name for the baby.

Almost all services and applications show what the baby looks like in different weeks of pregnancy, and also provide fetometry data so that after visiting the ultrasound room, a woman can compare the real size of the baby with the average. This, as you know, is one of the favorite activities of expectant mothers while waiting for the baby to appear.

other methods

There are no other ways to calculate the gestational age and due date, but there are ways to confirm the gestational age in doubtful cases. This is an ultrasound examination. You need to understand that scanners also have their own software, which is "configured" for obstetric terms and methods.

Usually, the reconciliation of the term by ultrasound is carried out for all women during a visit to the ultrasound diagnostic room. To do this, the specialist who conducts the diagnosis also specifies the date of the last menstruation, enters it into the scanner program, and then compares the size of the baby with the time limits.

It is more difficult if a woman does not know or does not remember the date of the last menstruation. This happens with serious and long failures in the menstrual cycle, and in this case, the period is set only according to the results of an ultrasound scan, referring to the fetometry table.

How ahead of time on which an ultrasound was performed, the higher the probability of getting exact result, since until a certain period all embryos develop according to the laws of nature at almost the same pace, but already at the end of embryogenesis, after 9-10 obstetric weeks, the actions of the genetic program begin to appear, which each baby has its own. One will be small and miniature, his size will be smaller than the norm, and the other will be large, like dad or grandfather, and his size already in the womb will exceed the standards.

The long-awaited pregnancy has come, and you really want to know when you will see your baby? To calculate the gestational age and the expected day of birth, it is enough to know only one date: the day the last menstruation began. It is for her that the gestational age will be calculated by the gynecologist when you come to the clinic to be registered.

Calculate gestational age online

Only a few women can accurately name the date of conception of a child in order to accurately calculate the actual gestational age. And even in this case, the birth of a new life may occur on another day, when future parents do not know about it. At the same time, almost every woman remembers the date of the last menstruation, which is why it is her obstetricians who take it as a starting point. Theoretically, ovulation - the period of release of an egg ready for fertilization - occurs in the middle of the menstrual cycle. Therefore, between the real age of the fetus and the obstetric gestational age (which begins on the first day of the last menstruation), there is a difference of approximately two weeks.

So, in order to calculate the gestational age online, you need to remember when your last period started. Two weeks are added to this day: it is during this period that the egg fully matures - and fertilization can occur. Further, there are two ways to calculate the expected date of birth: the first is when forty weeks are added to the date of the first day of the last menstruation. The second - from the day when conception could occur, three months are taken away and seven days are added to it.

But if you don't like fiddling with calculations, the interactive gestational age calculator will do it for you. Enter your data (the date of the first day of the last menstruation) - and within a second you will receive as a result the gestational age in weeks and days.

Calculate gestational age by date of conception

This calculator can also be used to calculate the gestational age by the day of conception if you are sure that this date is accurate. In this case, you will know the actual (gestational) gestational age, which will correspond to the age of the fetus. The obstetric period that the doctor will give you on the first day of the last menstruation will differ from it by about two weeks (that is, there will be more gestational).

Using our calculator to calculate the gestational age by weeks, you can also find out the approximate due date and start preparing for them in advance: find a comfortable maternity hospital and good doctor, learn breathing techniques in childbirth, choose a comfortable position for childbirth, think about partner childbirth, set up a nursery, and stock up on supplies for caring for a newborn.