Mark your calendar: On average, your pregnancy should last around 40 weeks, or 280 days, from your last period. (If it sounds like a long time now, just wait until you're 39 weeks pregnant.) Once you've calculated your pregnancy due date, you'll not only have a goal to focus on, but you'll be able to keep yourself healthy, monitor your baby's development, and prepare for the big day. Our due date calendar helps you figure out exactly when to expect your new baby. Whether he shows up early, late, or right on time is another question.
Preparing For Baby