Third trimester

Week 31 of Pregnancy

All five senses are working. Your emotions can carry to the fetus.

Fetal size
Coconut
Length
41.1 cm
Crown-to-heel
Weight
1.50 kg

Fetal development

  • All five senses are active.
  • Weight crosses 1.5kg.
  • Urine output increases, replenishing amniotic fluid.

Maternal changes

  • Braxton Hicks contractions can be confused with real labor.
  • Colostrum may leak from the breasts.

Recommended checkups

  • Review signs of true labor versus practice contractions with your OB.

Jump to week

Textbook averages. Individual variation is wide and this is not medical advice — confirm with your OB.