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PregnancySecond TrimesterMonth 6

Week 21 of Pregnancy: Baby’s Blood Cells & Your Changing Body

At 21 weeks pregnant, your baby grows hair and develops red blood cells. Learn what’s happening inside your body this week.

Dr Veena H

Key Timeframes

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00:04

Introduction

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00:18

Baby's growth

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00:33

Red blood cells

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00:45

Mama's symptoms

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00:50

Braxton hicks contractions

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01:18

Conclusion

Welcome to Week 21 of pregnancy! Your baby is developing eyebrows, hair, and a stronger sucking reflex. Their bone marrow now produces red blood cells, helping carry oxygen and remove waste. You may experience Braxton Hicks contractions, heartburn, or even slight breast leakage as your body prepares for birth. Moisturising regularly can help with dry, itchy skin as your belly expands. Learn more about your baby’s progress and how to manage pregnancy symptoms. If you have any questions, Apollo doctors and our community are here to support you every step of the way!