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How Big Is Baby?

From poppyseed to papaya, find out how big baby is at every stage during your pregnancy.

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Your Baby: Week 20

Baby's digestive system is busy creating meconium (a tarry black substance made of swallowed amniotic fluid, digestive secretion and dead cells), which will fill the first diaper after birth. And, speaking of the diaper situation... baby's genitals are now fully formed!

> Read more about baby this week

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