Me And My Boyfriend Showered Together The Other Day But

Me and my boyfriend showered together the other day but we did not have sex, though I gave him a handjob and he came and some sperm got on my hand. I rinsed it off in the shower and later during the shower I forgot about it & accidentally rubbed over my vagina. I was on the 4th day of my period as well. Do you think I could be pregnant? Thanks