5th week of pregnancy (7 weeks)

The 5th week of pregnancy introduces the 2nd month of pregnancy, a key period for the baby to become, for the formation of its organs.

Also, it is important for the mother to protect herself from microbes (such as listeria), viruses (such as rubella) and parasitic diseases (such as toxoplasmosis) during this period, as egg aggression at this key stage of pregnancy can have serious consequences for the fetus and its development.

She must also be very careful about medications. And do not take it without medical advice.

Reminder: the 5th week of pregnancy is 7 weeks of amenorrhea (no rules). Indeed, in France, gynecologists usually count the duration of pregnancy in weeks of amenorrhea (SA). Thus, the calculation of the pregnancy begins on the 1st day of the last period, so about 2 weeks before the fertilization (before the actual beginning of the pregnancy). Because it is only in the middle of the woman's cycle, around the date of ovulation, that the egg can be fertilized by a spermatozoon. And so in reality, the 1st week of pregnancy is the 3rd week of amenorrhea (SA).

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The steps and exams

As soon as your pregnancy is confirmed, make an appointment for a first examination at your gynecologist. It is after this first compulsory prenatal examination that you will obtain your maternity health record (or "maternity notebook", formerly "pregnancy notebook").

The maternity card is free. According to your department, it is sent to you:

  • by your health insurance fund,
  • maternal and child health services (PMI), or
  • by your mutual.

If you do not receive it, ask your doctor.

Important : your first prenatal examination must take place before the end of the 3rd month of pregnancy (ie before 15 weeks).

Blood and urine tests in early pregnancy

Blood and urine tests of early pregnancy are provided by law. Some are mandatory, others must be proposed systematically during the first consultation:

Mandatory exams:

  • screening for rubella and toxoplasmosis, routinely necessary in the absence of written results that make immunity a given,
  • screening for syphilis,
  • blood group determination (ABO, Rhesus), if you do not have a complete blood group card,
  • Irregular agglutinins (RAI) search,
  • search for sugar and albumin in the urine.

Systematically offered examinations:

  • AIDS screening (HIV),
  • ultrasonography between 11 and 13 WA for measurement of nuchal translucency,
  • biological markers for trisomy 21 screening.

In total, you will have to make 7 medical visits (to your doctor or your midwife) during your pregnancy and to practice various compulsory medical examinations. Including 3 ultrasounds, at the rate of one per trimester:

  • 1st ultrasound of pregnancy
  • 2nd ultrasound of pregnancy
  • 3rd ultrasound of pregnancy

The six other visits to a doctor or midwife should be done every month, from the 4th month of pregnancy to the date of delivery.

These consultations and many exams are covered 100% by the Health Insurance (except for ultrasounds, the management of which varies according to the month of pregnancy).

In order to benefit from a 100% coverage of medical expenses, you must establish a declaration of pregnancy during the first trimester of pregnancy, ideally during your first medical visit. This declaration should be sent to your social security fund and family allowance.

The mother at the 5th week of pregnancy (7 weeks)

At the 5th week of pregnancy (7 weeks), pregnancy sickness tends to intensify in most women. A great fatigue can affect the pregnant woman at any time of the day. Is responsible for these strokes of fatigue the yellow body hormone, progesterone.

Despite an increased need for sleep, sleep problems - including difficulties with full nights - are common. One of the reasons for this is that the ligaments of the uterus stretch and can cause very uncomfortable tugging in the lower abdomen, especially when lying down.

Another common problem is the need to urinate frequently, caused by the growing uterus that presses on the bladder. Not to mention the nightly cravings that can wake the pregnant woman in the middle of the night. Then with breasts that grow and become more sensitive, many women have difficulty, from the fifth week of pregnancy, to find a comfortable position to sleep, especially if they used to sleep on their stomachs.

During the first three months of pregnancy, circulatory problems (sometimes with changes in blood pressure) are not uncommon. These problems of the blood circulation are due to two phenomena:

  • hormonal changes that cause, among other things, that the blood vessels relax and expand (for example to better irrigate the placenta).
  • to the increase of the blood volume in the pregnant woman (+ 50% during the pregnancy!). At the same time, the blood becomes more fluid in order to reach the placenta more easily. The heart must make more effort to pump and carry blood through the body of the pregnant woman.

Other typical pregnancy pains at this stage of pregnancy are:

  • white losses,
  • a "big" belly (due to problems of digestion and bloating).

In general, these pregnancy pains should not worry, on the contrary: they are the sign of the normal course of your early pregnancy. But if you are worried or have too much of these symptoms, you should talk to your gynecologist or midwife.

How does baby grow up in the belly?

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The embryo at the 5th week of pregnancy (7 weeks)

At the 5th week of pregnancy, the embryo measures about 7mm. The size of the embryo can be measured on ultrasound by the "cranio-caudal length" (LCC). This means that we measure the distance between the head (top of the skull) and the buttocks of the embryo (the legs are not yet present). From now on, the embryo will grow about one millimeter a day.

At this stage, the embryo still looks like a small bean. It begins to present a ventral flexion, we can now discern two poles: the cephalic pole (the future head) and the caudal pole (the lower end of the fetus). We can hardly guess the draft of 4 buds corresponding to future arms and legs. On ultrasound, we also see the heart tube (the future heart) that starts to beat.

Note : As the pregnancy progresses, the size and weight of the baby evolve individually. The values ​​and figures shown are therefore average values. The monitoring of these data is important during the pregnancy and testimony of the smooth running of the pregnancy.

«Back to the 4th week of pregnancyGo to the 6th week of pregnancy »

Authors: Dorothee Gebele, Dr. Nicolas Evrard

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