so confused.

about a week ago I gave my bf head and he came and some got on my hand. I went to the bathroom and by then it was mostly dry but I wiped my hands off with toilet paper just in case. then I STUPIDLY folded it over and used the other side to wipe after I peed. at the time I didn’t know you could get pregnant if sperm gets just on your vulva and now I’m freaking out. I have cramps and the lower part of my belly looks bloated (I don’t start my period until next week) and I’m really scared that I could be pregnant. what do you think?