Fingers, toes and eyelids have formed. Testicles have formed in boys and ovaries in girls. 4th Month All organs have developed. The fetus just needs time to grow and mature. Beneath the gums, teeth are forming.
Fine hair begins to grow all over the body.
The baby sucks and swallows. The baby actively kicks its legs and moves its arms, but not with enough strength for the mother to be able to feel the movement. The uterus is now about four inches in diameter and the mothers tummy may show a slight bulge. The baby has been busy growing and is now big enough for the mother to feel her fetus moving about inside of her. A thumb may find its way to the baby's mouth for sucking.