My Developing Baby

Your baby is going through dramatic changes each week of your pregnancy. Find out what he's doing now, how big he is, and what you can do now to start bonding and preparing for his arrival.

Most Recent

Former Women's Basketball Star Jill Noe Is Carrying Twins — for Her Twin Sister

"She's always wanted to be a mom and her disease has already taken so much from her," Jill Noe told Today about carrying her sister's babies.

What Happens When You Choose "Gender Neutral" On Your Child's Birth Certificate?

Parents can now select an "X" gender marker on birth certificates. Experts explain how this can help parents raise gender-neutral children, but there are still a lot of unknowns for what the "X" means as these kids grow up.

This Twin vs. Single Pregnancy Bump Comparison Is Amazing

One vlogging mom shared a side-by-side look at her two pregnancies, and the difference between her experience carrying one baby and carrying two is totally eye-opening.

More My Developing Baby

Should You Worry About the Size of Your Bump—and Your Baby?

Our maternity nurse weighs in on what it means if your baby is measuring small during ultrasounds.

Signs of a Big Baby? Here's How Birth Weight Is Determined

Babies just seem to be getting bigger, but will a bigger baby be harder to deliver? Get the inside scoop on what baby birth weight really means from a labor nurse.

18 Wacky Things (Besides Baby!) That You've Seen in Your Ultrasound Photos

Flexing for the ladies, flashing a peace sign, and more: readers share some of the surprising things they've seen in their ultrasound images.