possible pregnancy?

so me and my boyfriend (were 15) were messing around a little and I gave him a handjob.. it got on my hand and i just wiped it on a napkin. later i was adjusting down there then i carried on with my day. basically now i am a couple days late and i have heard that you can get pregnant from even getting it anywhere down there because it can swim in or some shit. i'm panicking and i don't really know what to do.