Possible pregnancy

I had sex for the first time the other night. It hurt really bad... the first two condoms broke I think because they weren’t the right size and we didn’t have lube, but he hadn’t came yet, he finished in the third condom. It didn’t seem to leak or have any issues , I felt fine the next morning but later on in the day my stomach started to feel almost hollow, and strange . I also bleed a little , I read online that bleeding can happen if you had gotten incriminated . But could it also just be because it was my first time ? Do you think I sound safe? Sorry for the long post ..