Read on to learn more about what you can expect to happen with you and your baby-to-be every week of your pregnancy, since each one brings new developments and milestones when you're expecting. Your baby's changing day by day, and your body is keeping pace. Find out what's going on and why, inside and out, with this week-by-week pregnancy calendar guide.

Looking for a week-by-week guide to pregnancy? You're in luck! We've got loads of expert-approved info about each week and trimester, including what's up with your growing baby and what changes to expect for yourself.

You'll find stunning fetal development videos, thousands of articles, and helpful tools like our Due Date Calculator and Baby Names Finder. Meet other parents-to-be in our online community, and get all of this and more in our free pregnancy app. Dive in, and congratulations!