Bleeding during sex

Hi everyone! I have a question if anyone could help me, my bf and I had sex today and I started bleeding out of no where. I’m not on my period, nor should I get it for another two weeks. We were in the middle of things when it felt very ((very)) slippery down there and we both look and it’s blood. Also, something to keep in mind was that I wasn’t dry, so there would be no reason for any rough friction at all. It wasn’t a lot but it did get onto the sheets, I looked it up and google wasn’t much help. Anyone else experience this?