Note the first day of your last menstrual period (LMP)
Add 7 days to that date
Subtract 3 months
Add 1 year
Use this as the estimated due date
If you know the conception date, add 38 weeks from that date
If you know the embryo transfer date, use the clinic’s IVF due date calculation
Confirm the due date with an ultrasound, especially if periods are irregular
Remember the due date is an estimate, not an exact delivery date