Fetal development in pregnancy week 30:fetus in seventh month The light is visible at the end of the tunnel! Your oversized self and amazing growing baby have finally reached the single digits (in terms of weeks till birth)! The fine lanugo hair that has been growing all over their little monkey-like body is going to start falling off this week in preparation for the big day. But don’t be shocked if they’re hairier than you’d anticipated, some babies keep their lanugo until after birth. Still, it’s not any cause to be concerned as it will fall off eventually. No surprises here: your little porker is getting even cuter with increasingly pudgy arms and legs this week thanks to the ever-growing layers of subcutaneous fat. In terms of numbers, your baby should be weighing in at around 3 pounds 12 ounces (or more!) and be nearly 16 inches long.