Could I be pregnant?

Hey guys so this story is gonna sound silly but bare with me. So yesterday me and my boyfriend were “dry humping” but I had my underwear on and he didn’t. So while we were doing it some of his pre cum got on the outside of my underwear and some outside my vagina. Also the day we did was on the last day of my period and I have a 34 day cycle so my ovulation comes two weeks after I had my period. Is there any chance I might be pregnant and I know that there is a very little chance but I get nervous a lot.