Third trimester

Week 29 of Pregnancy

Brain development accelerates and the skull continues to harden.

Fetal size
Butternut squash
Length
38.6 cm
Crown-to-heel
Weight
1.16 kg

Fetal development

  • Cerebral folds (gyri and sulci) form rapidly.
  • The skull is firm yet flexible enough for delivery.
  • One of the fastest weight-gain periods.

Maternal changes

  • Hemorrhoids and varicose veins may worsen.
  • Deep sleep becomes elusive.

Recommended checkups

  • Biweekly visits plus daily kick counts.

Jump to week

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