Week 20

Weighing in somewhere around 10.5 ounces, baby is about 6.5 inches now head to bottom and about 10 inches from head to heel. 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!