Second trimester

Week 27 of Pregnancy

Third trimester begins. Daily kick counts are recommended.

Fetal size
Head of lettuce
Length
36.6 cm
Crown-to-heel
Weight
875 g

Fetal development

  • The brain grows explosively.
  • Eyes open and respond to light.
  • Hiccups become noticeable to the mother.

Maternal changes

  • Welcome to the third trimester — visits shift to every two weeks.
  • Braxton Hicks contractions become more frequent.

Recommended checkups

  • Daily kick counts (10+ movements within 2 hours). Decreased movement warrants a same-day visit.

Jump to week

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