Third trimester · Week 37 of 40
37 weeks pregnant: the size of a swiss chard
Early term. The baby practises sucking, gripping and breathing.
Reviewed against ACOG, NHS and WHO guidance · Updated November 2026
Typical size
About 48 cm · 2.9 kg
93% of the way to your due date
Your baby this week
Early term. The baby practises sucking, gripping and breathing.
Your body this week
Mucus plug loss and stronger Braxton Hicks may happen.
Tip for week 37
Learn the signs of labour: regular contractions, waters breaking, bloody show.
Carry this guide in your pocket
Mamivaa is a free pregnancy app with a week-by-week tracker, vitamin and water reminders, a food scanner and a baby checklist.
Start freeThis guide offers general information and does not replace advice from your doctor or midwife. If something feels wrong, contact your provider or emergency services.