Second trimester · Week 15 of 40
15 weeks pregnant: the size of a apple
Bones are hardening. The baby may sense light through closed eyelids.
Reviewed against ACOG, NHS and WHO guidance · Updated November 2026
Typical size
About 10 cm · 70 g
38% of the way to your due date
Your baby this week
Bones are hardening. The baby may sense light through closed eyelids.
Your body this week
Nasal stuffiness and occasional nosebleeds can occur from extra blood flow.
Tip for week 15
Use a humidifier and saline spray for a blocked nose.
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.