What are the chances of getting pregnant in the following situation: My boyfriend and I were fooling around, I gave him a hand job and there was pre cum. We stopped I got up and put plenty of hand sanitizer on, a good 20 to 25 minutes passed I got home but I totally forgot to wash my hands which I always do. I went to the bathroom to pee and wiped my self off, is there a chance that maybe there was some left over pre cum under my finger nails? Can a pregnancy be possible this way? I know pre cum may contain sperm so that's why I'm worried. I'm 20 year old college student, and I really cant afford a pregnancy at the moment. Thank you beforehand for the answers.