Okay so I am 17 my girlfriend is 15. We were doing oral sex and I got some precum on my finger. I didn't wipe it off but I know we waited ATLEASST 5 mins before I fingered her afterwards. But I layed in bed with her within those 5 mins watching TV so Im sure me touching her clothes could help wipe it off. But I'm stil afraid she could get pregnant even tho I waited more then 5 mins to finger her and I know it was dry.