Track your pregnancy week by week. Get due date, trimester info, baby size estimates, and important milestones.
Pregnancy is measured from the first day of your last menstrual period (LMP), even though conception typically occurs about 2 weeks later. A full-term pregnancy is 40 weeks, divided into three trimesters of roughly 13 weeks each.
Baby's brain, heart, and organs begin forming. Morning sickness is common. Take folic acid and avoid alcohol.
Baby grows rapidly, you may feel movement. Energy typically improves. Anatomy scan around week 20.
Baby gains weight and lung maturity. Braxton Hicks contractions begin. Prepare for delivery.
The due date is calculated by adding 280 days (40 weeks) to the first day of your last menstrual period (LMP). This calculator also adjusts for cycle lengths different from 28 days.
Only about 5% of babies are born on their exact due date. Most births occur within 2 weeks before or after. The due date is an estimate based on average pregnancy duration.
First trimester (weeks 1-12): Major organ development. Second trimester (weeks 13-27): Rapid growth, movement felt. Third trimester (weeks 28-40): Baby gains weight, lungs mature.
Schedule your first prenatal visit between weeks 6-8. Regular checkups are typically monthly until week 28, then biweekly until week 36, then weekly until delivery.