How Many Weeks Am I? This is a question that many women ask during their pregnancy. While there are a variety of ways to estimate how far along you are in your pregnancy, the most accurate way to know is through an ultrasound.
You are exactly as many weeks as there are days in your pregnancy. The average pregnancy lasts 40 weeks, or 280 days. So if you are 20 weeks pregnant, that means you are exactly 20 weeks, or 140 days, into your pregnancy.
