Third trimester · Week 38 of 40
38 weeks pregnant: the size of a leek
Organs are ready for life outside the womb.
Reviewed against ACOG, NHS and WHO guidance · Updated November 2026
Typical size
About 49 cm · 3.1 kg
95% of the way to your due date
Your baby this week
Organs are ready for life outside the womb.
Your body this week
Pelvic pressure and nesting instinct are common.
Tip for week 38
Rest and keep your phone charged with your provider's number saved.
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.