One day, Noah saw that his mom's belly was getting big...

So he asked her, "Mom, why is your belly getting bigger?"

Mom says to Noah, "Surprise! You are gonna be a big brother!"

"That's so cool mom! But... how did it get inside of you?"

"Mom and dad will explain this to you so you understand!"

"First, mom and dad give each other a really big hug. This hug is very special. Then after 2 weeks we found out a baby is inside my stomach."

During the first month, the baby is only the size of a poppy seed. So you can't see mom's tummy getting bigger yet!

During the second month, the baby is as big as a grape. Now the baby has all of its body parts. The baby's teeth are also coming in.

During the third month, the baby is the size of a pea pod. The baby is developing its own fingerprints.

During the fourth month, the baby is the size of a turnip. Mom can finally start feeling her baby move!