Third trimester · Week 40 of 40
40 weeks pregnant: the size of a pumpkin
Your due date! Only about 4% of babies arrive exactly on it.
Reviewed against ACOG, NHS and WHO guidance · Updated November 2026
Typical size
About 51 cm · 3.5 kg
100% of the way to your due date
Your baby this week
Your due date! Only about 4% of babies arrive exactly on it.
Your body this week
If labour hasn't started, your provider will discuss monitoring or induction.
Tip for week 40
Keep tracking movements daily until your baby arrives.
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.