Fetal Development Week by Week – Week 21
Your baby is now about 10 ½ ounces and measures about 8 inches long – about the size of a large banana. The rapid growth that has happened over the last few weeks will slow down now. Every week increases the baby’s chance of survival outside of the womb now.
The head is now about 1/3 of the size of the body now. Rapid eye movements begin at twenty-one weeks and baby can hear when you talk or sing to them now. Swallowing, which is believed to help baby’s digestive system function after birth, continues at this point. The heart is growing stronger and can be heard when you visit the doctor’s office. Fat continues to accumulate now and the bones and muscles are getting stronger each day.
By now, most people can probably tell that you are pregnant. Your body is changing rapidly as the baby grows. Be sure to get plenty of rest and eat healthy. Exercise is a great way to stay in shape and keep healthy. Check with your health practitioner to find out what types of exercise would be appropriate for your pregnancy.