I was fooling around with my so and I was on top of him and we were grinding naked and his tip was almost like all the way in but couldn’t go all the way ( haven’t had sex yet) then I turned on my side he was doing the same thing but while I was on my side. He came on my buttcheek. My period is due in 4 days. I know this is ridiculous but what are the chances of pregnancy? I guess I’m just wondering cause his tip was kinda inside me