Hi, My Boyfriend And L Dryhumped, I Was Wearing A

hi, my boyfriend and l dryhumped, i was wearing a dress and my panties and he had his boxer and jean on. i felt wetness on the side of my thigh after a few mins into it so i immediate washed off my thigh and vulva. this happened during my fertile period. is it possible for sperm to pass through his boxer and jean and get to my thigh. am worried cos l washed my thigh and my vulva (not inside the vagina) at the same time with same hand. thank you