So...I'm not sure if this is even topic worthy...or...allowed for that matter, but i have a fairly dire issue.
1. I hooked up with this girl
2. She was on Birth control for about 2 weeks.
3. Condom was used (Although, i did try to put it on backwards at first...im not sure if that has any residual effects or anything)
4. Didnt ever "finish"
What are the chances of her becoming pregnant assuming the above facts?