Bleeding? Long but I need advice!!

I'm supposed to start my period tomorrow, but I haven't been showing any signs of my period coming at all. My fiance and I had sex and it was on the floor so it was a bit rougher than usual (deeper bc the floor doesn't squish down like a bed ya know?). After we had sex, I wiped off and there was a very pinkish orange blood all over. I naturally assumed it was my period, so I put in a tampon. Now my vaginal hurts terribly and there's barely any blood on it. Usually my first day is a strong flow and also not so pinkish red. It's usually a darker brownish red. Is this my period or something else??