Your adorable little fetus is busy with thumb sucking, toe wiggling, and (not so cute but equally amazing) making urine and breathing amniotic fluid as the liver, kidneys and spleen continue to develop. Lanugo (thin, downy hair) is growing all over the body for warmth.
Your fetus is forming teeth and vocal cords... savor this, their non-functional phase. Baby is approaching normal proportions, with a head now only one third the size of the body. Intestines are in the process of moving from the umbilical cord to baby's tummy. (Much more convenient.)