So about a month ago I had an interaction with this guy. I was wearing a thong and him nothing. He didn't ejaculate at all and I really don't remember him rubbing his dick on my crotch area (I had parties on the whole time) I also had a tampon inside me because it was the 3rd day of my cycle. I don't feel pregnant but I am worried if there's a chance. Do you think I could be pregnant?