Week 27: Your Baby is the Size of a Head of Broccoli
You are about to enter the third trimester. Shortness of breath is common as your uterus pushes against your diaphragm. You may feel baby hiccups as regular, rhythmic bumps in your belly. Sleep is becoming increasingly challenging.
Your baby at week 27
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Size of a Head of broccoli
Baby Development
The baby's brain is very active now, with more brain tissue developing. The baby has regular sleep and wake cycles and may be more active at certain times of day. The lungs continue to mature but are not yet fully developed. The retinas are developing layers that will help receive light and transmit information to the brain. The baby can hiccup, and you may feel rhythmic jumping in your belly.
Week 27 Highlight: This is the last week of the second trimester - your baby is now two-thirds of the way through development!
Common Symptoms
Tips for Week 27
Stay hydrated and stretch before bed to reduce leg cramps.
Sleep on your left side for optimal blood flow to baby.
Begin preparing your hospital bag essentials.
Eat smaller, more frequent meals to manage heartburn.
South Africa Specific Info
This is the last week of your second trimester. Your antenatal visits in the public sector may increase to every two weeks from the third trimester. If you are Rhesus negative, your anti-D injection is typically given around 28 weeks. Make sure to attend all scheduled appointments - they are crucial for monitoring both your health and your baby's growth.
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Frequently Asked Questions
About the Author
Due Date Calculator SA Editorial Team
Our content is reviewed by healthcare professionals familiar with South African maternal health practices. We combine evidence-based medical information with local knowledge to support South African mums throughout their pregnancy journey. Our team includes contributors with backgrounds in midwifery, obstetrics, and maternal health education.
Last reviewed: February 2026