Today is week 20.
Our baby is about the size of a cantaloupe.
Baby's digestive system is busy creating meconium, which will fill the first diaper after birth. And, speaking of the diaper situation....baby's genitals are now fully formed.
Vernix caseosa, a greasy white substance made of lanugo, oil and dead skin cells (yum) now coats baby's skin, shielding it from the amniotic fluid. (Picture yourself after a nine-month bath, and the need for protection makes sense.) You might actually get to see the vernix at birth, especially if baby is premature.