Sex question

Okay so me and my bf did it yesterday, and he came on my clit and wiped it off, but he put it back in. I'm cramping today, in my uterus, and I can't tell if it's bc I'm sore or if it could be a possible pregnancy, and I have irregular periods and my Flo says I ovulate the nest day, when we did it, but I can't tell if my ovulation was already happening and if my egg was already fertalized. My period is not due till the 29th. any ideas? And I know that many people experience different symptoms of pregnancy