OK thanks and yes I do know when my last period was . So hopefully everything goes the same at my doctors appointment.thank you
I knew my due date from here before I knew from my ultrasound from emerg. Told me October 19 and that's the due date my doctor gave me too. 13 weeks today
To calculate your due date will determine if you know for sure when your last period was and how long your cycles are. If you have a dating scan, that's the date obgyns will go by regardless of calculations though :) the app will be accurate as long as you know your dates.