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Pregnancy Guide·Third Trimester

Week 29: Muscle Development

Butternut squash (~26cm crown-rump)·Last reviewed: 25 April 2026
Quick answer

At week 29, your baby's muscles are getting stronger and kicks may feel more forceful. The baby weighs about 1.2kg and the brain is controlling basic body functions. According to Nuhah's pregnancy guide, the third trimester is well underway.

Baby development at week 29

Muscles are strengthening and movements feel more forceful. The brain has been controlling basic body functions like temperature regulation (from around week 28) and is refining control of breathing rhythm. The baby weighs about 1.2kg and is roughly 39cm from head to toe. Bones are absorbing more calcium, so your calcium intake is important. The baby's head is growing to accommodate the rapidly developing brain.

Your body this week

You may feel increasingly uncomfortable as your bump grows. Heartburn, shortness of breath, and back pain continue. Leg cramps at night are common. Your blood pressure will be monitored regularly at appointments. Some people experience vivid dreams or difficulty getting comfortable at night.

Things to do this week

1
Ensure you are getting enough calcium and iron in your diet
2
Start packing your hospital bag
3
Continue monitoring baby movements daily

Frequently asked questions

Why are the baby's kicks stronger now?

Your baby's muscles are growing stronger each week, and there is less space to move around. Kicks, punches, and rolls may feel more forceful and even visible through your skin. This is a sign of healthy development.

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