This week the baby will go through many changes. The baby’s skeleton will begin to change from soft cartilage to bone. The umbilical cord is starting grow stronger and thicker. The baby can now move its joints and is busy moving all around in my tummy! The baby weighs about five ounces this week and is about 5 inches long. If you compared the size of a baby to a vegetable it would be about the size of a turnip.