There's really no way to definitively answer that. Every woman is different, so you could be more or less fertile than some. Your age effects the chances as well. Based on a test thingy I took...I can only say maybe 15-20% chance (which is about as high as it gets on that test) if you are of average fertility. If you are very young (30 or under) the percentage may be higher, and if you had sex more during the month the percentage would go higher still. Go to thepregnancytest.com. It would probably be no less accurate than any of us.
at 1:01 AM on Nov. 7, 2009