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Pregnancy Guide·Second Trimester

Week 15: Growing Stronger

Apple (~10cm)·Last reviewed: 25 April 2026
Quick answer

At week 15, your baby is about the size of an apple. Bones are becoming more visible on ultrasound and the baby is moving around actively. According to Nuhah's pregnancy guide, many parents start feeling more confident as the second trimester settles in.

Baby development at week 15

The baby is becoming more active, moving limbs, making fists, and even sucking their thumb. Bones are hardening and becoming visible on ultrasound. The body is growing faster than the head, making proportions more balanced. Thin, translucent skin covers the body, and blood vessels are visible beneath it. The baby is about 10cm from crown to rump.

Your body this week

You may be feeling much better than in the first trimester. Energy levels are often improved. Your bump may be becoming visible, especially in tighter clothing. Some people experience nosebleeds or bleeding gums due to increased blood flow. A stuffy nose (pregnancy rhinitis) is also common.

Things to do this week

1
Enjoy the improved energy of the second trimester
2
Continue regular gentle exercise
3
Stay well hydrated
4
Start researching your options for antenatal education

Frequently asked questions

What happens at 15 weeks pregnant?

Your baby is growing rapidly, about 10cm long and increasingly active. Many people feel better in the second trimester as nausea eases and energy returns. Your bump may start showing, especially in tighter clothing.

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