Last month (October 2011) I got pregnant. I started my Period on the 7Th and it lasted 5 days. But 2 days after my period ended on the 11Th. I cheated on my boyfriend and had sex with my ex. And Now its November and I'm Pregnant. According to Conception Circulatory's I conceived anywhere from the 17th to the 24th ! Me and my boyfriend have been having sex all the time since I cheated. Who baby would it likely be?

If you had sex with your boyfriend within several days of the sex with your ex, it really could go either way.

It is important to remember that calendars designed to predict ovulation only go with the average. Many women will ovulate a bit before this or after this on a regular basis. Although unusual, you can happen to ovulate well outside your norm as a one off.

If dates are pretty close, the only way to know for sure would be to have a DNA test done after baby is born.