My girlfriend and I were fooling around on the 26th of june, then on the 14th of july she began spotting and finally got her period, she went through several pads but 2 days later it stopped then she began spotting then it stopped again and it came back and stopped again...now when we were fooling around we were trying anal and I decided to wipe precum off of her butt, but I wiped back to front, what are the chances of her getting pregnant or being pregnant?