Babies born too early may have more health problems at birth and later in life than babies born later.
Being pregnant 39 weeks gives your baby's body all the time it needs to grow.
Here's why your baby needs 39 weeks:
1. Important organs, like his brain, lungs and liver, get the time they need to develop.
2. He is less likely to have vision and hearing problems after birth.
3. He has time to gain more weight in the womb. Babies born at a healthy weight have an easier time staying warm than babies born too small.
4. He can suck and swallow and stay awake long enough to eat after he's born. Babies born early sometimes can't do these things.