Pregnancy week by week: the stages of pregnancy over the weeks

First trimester (week 1 to 13): hormones, monitoring and installation of the baby

On the mother’s side, the great upheaval

If the first weeks of pregnancy (1 to 4) can happen unnoticedespecially in women who had not expressly planned pregnancy, but from the first days of pregnancy a drastic change which takes place in the body of the expectant mother. “Even before the biological confirmation of a urine test or a blood test, many women feel that they are not in their normal state,” reveals Sophie Jouve, liberal midwife and member of the CA of the ANSFL (Association National of Liberal Midwives). , who meets and advises expectant mothers every day. “Some are more tiredothers feel “smeared” or even really badand still others are sometimes surprised to urinate more frequently, partly because the uterus is already pressing on the bladder while it then goes up into the abdominal cavity,” she names as clear signs.

The body is in full mutation during this first trimester of pregnancy. In order to optimally receive and carry this new organism, the embryo, the woman’s entire body devotes itself to its new function under the action of pregnancy hormone (Hormone HCG).

  • the blood volume increased (between 1.5 and 2 liters)
  • the oxygen consumption increases also from 20 to 30%, which will very soon make the pregnant woman out of breath.

“Women are in fact in a certain, not really comfortable, state where their whole organism is adapting and transforming to support, nourish, oxygenate and protect another organism in ultra-rapid growth! », warns the midwife.

On the embryo side: ultra-rapid growth

Are you surprised by Mom’s transformations? This is nothing compared to those concerning the embryo. From two microscopic cells first, shortly after conception, the embryo already measures 10 cm at the end of the first trimester. It is then referred to as a fetus.

When does the fetal heart beat?

At 4 weeks (ie 6 weeks of amenorrhea, ie since the last period), her heart starts beating. It’s the moment when Ultrasound is required to ensure its good vitality. “The fetus also starts to move at this point, but unfortunately its mother won’t usually notice until the beginning of the next trimester. »

What follow-up care should be taken at this stage of pregnancy?

From the first few weeks it is important to measure what is happening and to arrange the first important appointments for the good progress of the pregnancy, as the midwife reminds us.

  • Adopt a new lifestyle: stopping everything that could interfere with the proper development of the baby: alcohol, cigarettes, drugs, without ensuring that they are not toxic to the fetus …
  • Make an appointment with your doctor, gynecologist or midwife order a blood test and first trimester examinations (screening trisomy, proteinuria, glycosuria). And let us explain the next steps to you.
  • Make an appointment for your 1st trimester ultrasound between 11 and 13 weeks Amenorrhea (i.e. between the 9th and 11th week of pregnancy) with a midwife or ultrasound doctor
  • Check with your doctor or midwife declaration of pregnancy with the health insurance companies and the family benefits office.
  • Depending on the region, sregister (already!) with a maternity to secure a place for her delivery 7 or 8 months later.

Second trimester (weeks 14 to 27): Healthy fitness and growth

The womb, at the center of all evolutions

In the second trimester of pregnancy, theChange in the volume of the uterus is the most important phenomenon… and probably the most impressive. ” The belly gets round and comes out visibly. The baby begins really felt in his movementsincluding the partner who can finally put their hand and feel their baby’s presence,” says Sophie Jouve.

In which week do you feel baby movements?

Some women easily perceive baby’s movements, from 13 weeks amenorrhea (11 weeks pregnant). For most, the first sensations appear between 18 and 20 weeks amenorrhea.

The ultrasound of the 5th month and the revelation of the sex of the child

In the second trimester, an important meeting is announced, Ultrasound in the 5th month. “It’s really the essential ultrasound of a pregnancy,” emphasizes the midwife, the one who does theWe make sure that the fetus develops completely normally. The sex of the child can also be announced at this point, even if it can already be predicted from the 4th month of pregnancy. »

An increasingly sensitive baby?

The first sense organ that is functioning at this point is still on the baby’s side the skin. Touch is the most developed sense in the fetus. “Parents-to-be shouldn’t hesitate to touch their tummy, but make sure they let the baby rest,” warns the professional.

energy for mom

For the mother, this 2nd trimester is usually very convenient compared to the other two: she is less tired, her nausea has generally stopped. However, you can start with it feel contractions her uterus trying to straighten up between 5 and 6 months. In addition, it is not uncommon to see the first appearance of uterine contractions, without gravity. It is also a time when the pregnant woman can absolutely be physically active.

Early prenatal care, an essential step

From the 4th month it is important to rmeet a midwife in order to be able to conduct a so-called “early prenatal interview”. The deadline, long, is 100% supported through maternity insurance. It allows you to ask yourself and express your experiences of pregnancy, your fears, your expectations or your wishes around the birth and arrival of your child. “The midwife can then direct her patient to this and that type of Preparing for childbirth and parenthood. The meetings take place during the 3rd trimester but can start from the 5th month of pregnancy if necessary. explains the midwife.

Third trimester (28th to 40th week): final touches before the birth

Prepare and relieve the mother’s body

In this last stretch, the mother’s body is presented tense. During this third trimester Baby is very activeHis movements are even embarrassing at times and can wake his mother up. In addition, it is not uncommon to feel it, especially when he decides to perform his great turning pointstanding on the head, between the 7th and 8th month of pregnancy.

  • As the uterus grows vertically, the woman increasingly finds herself with digestive problems and his breathing.
  • back pain can also occur in many women because the weight of the uterus and the baby pulls forward and the pregnant woman arches more and more. “Stretching can help improve back and breathing comfort,” advises the midwife, recommending exercises such as yoga or a visit to theosteopath.
  • finally sleep Of course, from the 8th month of pregnancy things are less and less good because it is difficult to find a comfortable sleeping position, but also by sleep hormones which are not quite isolated as usual.

What are the latest baby changes?

baby sidehearing aid becomes more and more efficient, the ear refines its training, and the baby perceives and becomes accustomed to its sound environment. At his birth, he perfectly recognizes the voice of his parents.

Between 34 and 35 weeksthose are lung, very important organs that become fully functional. From that moment, the baby trains to breathe through movements of the diaphragm, and his mother begins to notice the baby’s hiccups through her baby’s regular outbursts.

Last but not least baby is growing a lot in the last 2 months of pregnancy he takes half its weight over the last 7 weeks. From 38 SA the baby is ready and can weigh at any time about 3,200 kg.

What are the last doctor’s appointments that are scheduled?

  • One last ultrasound : In addition to the monitoring consultations, as every month since the beginning of pregnancy, the last trimester and the last few weeks are marked by the ultrasound of the 8th month, which is carried out between the 32nd and 34th week of pregnancy (SA). It is used to check the baby’s growth and position,
  • Appointment with the anesthetist of motherhood. The interview is obligatory in order to prepare mother and child for all eventualities of the forthcoming birth (epidural anaesthesia, caesarean section, operation, etc.).
  • childbirth preparation : If possible, the seven birth and parent preparation talks should begin before the maternity leave, in the 7th month of pregnancy, in order to feel fit 3 to 4 weeks before the due date.
  • a check-up, 100% covered, to be carried out by a midwife close to the place of residence of the intended parents (who may be different from the midwife with whom the patient underwent her birth preparation. This assessment is essential for prepare for postpartum follow-up care; since women leave the maternity ward after only 2 days. On the baby’s third day, a midwife must be able to come and help them.

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