cervix pain

I have been feeling a sharp throbbing pain in what I am assuming is my cervix. I have been cramping and bleeding, but I assumed it was my period because Im just a few days away. Im not sure anymore because this new feeling has replaced the cramps, and the blood is very watery. 
It started after I had sex with a somewhat new partner. He did go too deep a few times, but it is nothing new from past partners and there was never this much discomfort afterwards.