Pregnancy Calendar: You are now 20 weeks pregnant
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Week 20 of fetal development
Your baby
The baby’s skin starts to thicken. At this time special sebaceous glands start to secrete a waxy substance called vernix caseosa, which protects the baby’s fragile skin. Scalp, hair and toenails are also beginning to grow. The baby’s heartbeat can be heard by ultrasonic Doppler.
Dos and Don’ts
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