I had sex with my boyfriend on oct. 15. Then I had ax with my ex around the middle of dec. My due date caculates that I got pregnant November 23 I didn't have sex at all in November. How did I get pregnant?

That is the trouble with due dates, they are estimates. After you had sex on Oct 15 did you have a period?

It's pretty simple to determine HOW you got pregnant, it's called SEX. WHEN is determined by your fertile period.

Yes, in November the same month I got pregnant in but I didn't have sex that month.

Yes, in November the same month I got pregnant in but I didn't have sex that month.

Have you told your OB this information? Due dates are an "educated guess" based on the size of your growth and that of the baby's.

Yes. She told me I had to have had sex in November which I did NOT!