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Pregnancy: 31 weeks
Last reviewed: 08.07.2025

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How the child grows:
This week, the baby's height reaches 40 cm, and its weight is 1.5 kilograms. It turns its head from side to side, its arms, legs, and body begin to get fat, as the necessary fat begins to accumulate under the skin. It moves a lot, so you may have problems with sleep. This is not scary, relax, this is just a sign that your baby is healthy and active.
Important: Each baby's development is unique. Our information is designed to give you a general idea of fetal development.
Changes in the expectant mother
Have you noticed any contractions in your uterus? Many women feel these occasional contractions – called Braxton Hicks contractions – in the second half of pregnancy. These contractions last about 30 seconds and are usually infrequent and painless. Frequent contractions may be a sign of preterm labor. Call your doctor immediately if you have contractions more than four times in an hour, or if you notice any other symptoms of preterm labor: an increase in the amount or pattern of vaginal discharge, abdominal pain; increased pressure in the pelvic area; or pain in the lower back.
You may have noticed colostrum leaking from your breasts lately. If so, place pads in your bra to help protect your clothes.
If you are having a boy, you may want to consider circumcision. Consult your doctor and discuss the issue with your partner.
There is no right way to give birth. Every woman’s case is different, as is every birth. Some women know in advance that they want pain relief, others are determined to go natural, and others change their minds as the process progresses. Familiarize yourself with all of your options so you can make the right choice based on principles and informed decisions. When making decisions, consider the following factors:
- If you haven't already, sign up for a prenatal course. The instructors cover all the topics you're interested in, including epidurals, spinals, and a systems approach based on relaxation and breathing techniques.
- Most women choose pain relief. The most popular form of anesthesia is epidural.
- Some women choose to give birth naturally without the use of drugs.
- Whatever decision you make, you have the right to change your mind during labor.
This week's activity: No need to pack your bags yet, but you can already make a list of necessary things for the maternity hospital. In addition to a change of underwear and a toothbrush, add to the list:
- Photos or other items to help distract you during labor
- Snacks to Keep You Energy Up
- Comfortable socks and flip flops
- Favorite pillow
- Easy reading material
- Nightgown
- Clothes for the child
- Camera or video camera, new batteries and film, if necessary