Third trimester · Week 29 of pregnancy

29 weeks pregnant: body, feeding, and care

Muscles and lungs keep maturing, and the head is growing to make room for the developing brain.

Body and care — week 29

Muscles and lungs keep maturing, and the head is growing to make room for the developing brain. Development notes on this page are general education summarized from ACOG patient-education material; they describe typical development, not your pregnancy specifically. Anatomy and growth are confirmed by your own provider and ultrasounds.

This week's checklist

Week 29 questions

What is happening at 29 weeks pregnant?

Muscles and lungs keep maturing, and the head is growing to make room for the developing brain.

Which trimester is week 29?

Week 29 falls in the third trimester (weeks 28–42). See the third trimester hub.

How is a due date calculated?

A due date is typically estimated as 280 days (40 weeks) from the first day of the last menstrual period. It is an estimate — try the client-side due-date calculator; your provider's dating outranks it.

Educational information only — not medical advice. Every pregnancy and every baby develops on their own timeline. If you have any concern, talk to your obstetric provider or your baby's pediatrician.