Pregnant woman holding an ultrasound image. Getty Images—(c ... a sonogram of a 15-week baby, ... suggest they do feel sensations such as pleasure when they are as young as 15 weeks old.

Welcome to week 15! You may have found a renewed sense of self and maybe an increased libido, too. Take advantage if your partner is up for it. At 15 weeks pregnant, your baby is 4.75 inches long ...

At six weeks, a baby’s brain is developing. By 10 weeks, the most critical portions of bodily development are complete. This baby will continue to grow and develop until the day it is born.