when did i get pregnant

if your due date is in september, you got pregnant in decemeber. you'd be due in october if you got pregnant in january. its more accurate to determine around the time you conceived by your last period since a due date is like an "educated guess" which is why dates can change through out pregnancy. its always good to know your date of your last period.

First Day of Last Menstrual Period: December 10, 2011
Probable Date of Ovulation: December 24, 2011
Possible Dates of Conception: December 20 to December 28, 2011
Due Date: September 15, 2012 (40 weeks)