My girlfriend is on the pill but last week on the last day of her period she vomited up the pill. Everyday for a week after from monday to sunday she took the pill correctly and we had sex at the end of this week using a condom. I ejaculated and cleaned my penis using water and a towel but I didn't pee. After this I went back over to her and we performed oral sex for 15 to 20 minutes and we decided to try anal sex for the first time, I went to put my penis in but accidentally placed it in her vagina. Just the head went in for 3 seconds until we realized and I took it out. This is four days before ovulation and I've been worried if she can become pregnant because of this. I'm just wondering that even if after sex and after cleaning my penis and making sure it was dry, is it possible that my girlfriend can become pregnant from this even if I didnt pee after sex. By the way I'm pretty sure there was no preCM.