Hello, this is honestly such a stupid little thing to worry about, but I'm only 17 and a bit naive and I just tend to worry about these things. My boyfriend and I were getting intimate last Saturday and we dry humped. I was wearing underwear, but there was a brief moment where I took them off. He didn't have underwear either. He never ejaculated on my vagina, not even near it, but there was pre-cum. He did go to the bathroom to urinate several times while we were dry humping, and he only ejaculated once which was when we finished. Is it possible that the urine washed out any semen that was left behind and that therefore no semen was picked up by the pre-cum? Please ease my worried mind