Pregnancy Week by Week
Follow your pregnancy week by week — your baby's size and development, how your body changes, and gentle tips for each stage. Plus a due-date calculator.
Due date calculator
Enter the first day of your last period to estimate your due date and see how far along you are.
Choose a date to see your results.
First trimester
About the First trimesterWeeks 1–13
Second trimester
About the Second trimesterWeeks 14–27
Third trimester
About the Third trimesterWeeks 28–40