What happens during the third trimester?At 32 weeks: Your baby’s bones are fully formed, but are still soft.Your baby’s kicks are stronger.The eyes can open and close and can sense changes in light.Your baby’s body begins to store important minerals, like iron and calcium.The lanugo (fine hair) starts to fall off.Your baby is about 15 to 17 inches long and weighs around 4 pounds.At 36 weeks: The waxy coating called vernix gets thicker.Your baby is getting bigger and has less room to move around.Your baby is about 16-19 inches long and weighs around 6 pounds.At weeks 27-40: Your baby is considered full term and the organs can function on their own.Your baby may turn into a head-down position for birth.At birth, your baby may weigh between 6 and 9 pounds and be between 19 and 21 inches long.Source: womenshealth.gov