My main question would b when is my due date? I did my own calculations and came up with a due date of aug 20,2012 my LMP was nov 14, 2012. When i went to my doctors appt they also said aug 20, 2012. I am 100% sure of my LMP. I had an ultrasound done and they said my due date is now sept 5, 2012 cuz of the size of the baby. Whats my due date?