Week 19Today’s the first day of 19 weeks’ gestation. During last Tuesday’s ultrasound, baby was measured to weigh 1 lb. 8 oz. Is it just me or is that big for this early in the pregnancy?? At this stage, Baby is covered in vernix, a white, cheesy "cream" that protects his/her skin from the long bath in amniotic fluid (preemies are covered in vernix at birth, while "posties" have almost none). This week, permanent teeth buds are forming behind the milk teeth buds. Organs of reproduction are developing rapidly, getting ready to sustain future generations.