Pregnancy calculator

Due date calculation

A pregnancy is normally 40 weeks long calculated from the last periods first day, the day you actually got pregnant is usually 2 weeks after that day when the conception happens.
That means that you’re not actually pregnant the first 2 weeks as you haven’t actually had your ovulation yet.

If you decide to calculate your pregnancy from the conception date instead your pregnancy is only 38 weeks long.
But it’s more common to count from the last period since it’s hard to know for sure when the conception actually happened.