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Pregnancy Tracker · Third trimester

31 Weeks Pregnant

Size of a
Coconut
Length
16.2"
Weight
53 (3.3 lb) oz
General information, not medical advice. Every pregnancy is different — bring questions to your OB or midwife.

Your baby at 31 weeks

All five senses are working, and the fetus can process information from them and track light. It is storing calcium, iron, and phosphorus, and putting on fat rapidly.

How you might feel

Braxton Hicks contractions may be more noticeable, and your breasts may leak early colostrum.

This week's tip: Use disposable or washable breast pads if leaking becomes bothersome.
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Sources: Mayo Clinic — Fetal development week by week, American College of Obstetricians and Gynecologists (ACOG), Cleveland Clinic — Fetal Development, NHS — Pregnancy week by week, AAP HealthyChildren.org — Prenatal & Pregnancy.