Once you’ve used the pregnancy calculator, take a look at the pregnancy week by week section to find out how you and your baby will develop throughout your pregnancy.Chances are if you’ve just discovered you’re pregnant you’ll already be 4 weeks or even 6 weeks pregnant. The result a due date calculator will give you is based on 40 weeks of pregnancy.This is right in the middle of full term, which is why so few babies are actually born on this exact day.
Then have a look at how your baby is growing right now and what will be happening each week of your pregnancy.
If you deliver on your due date, your baby is actually only 38 weeks old, not 40.
Need to know : On average only 5% of births take place exactly on the estimated due date.
Your due date is determined by a simple calculation – Add 280 days (40 weeks) to the first day of your last menstrual period (assuming a 28-day cycle).
Note that your menstrual period and ovulation are counted as the first two weeks of pregnancy.