Hi, me and my girlfriend made a big mistake. Last night, we had unprotected sex for the first time. I did not cum inside her. I pulled out before it was time and had to stroke a little bit to get it out. We had protected sex the day before and I peed a few times afterwards. I also washed myself as well. The problem is we found out afterwards that it was her ovulation day (based on an app that she uses). I've read that precum could cause pregnancy due to sperm staying in it but I've never experienced precum in my life. Should I be worried? She does not want to take Plan B either.