Somethings not right!

So, I need some help or maybe some advice!

I got off of my period 10 days ago and went about my business as usual. 4 days ago I started cramping terribly and spotting. Nothing was there the second day. The third day, Wednesday night, I woke up in he middle of the night feeling like I had peed myself or something. I got up to check and there was just blood; not like period blood or abnormal discharge either, but straight blood. I got cleaned up and whatnot, but then I became very dizzy and nauseous. Yesterday and today I have been cramping bad again as well as on and off spotting! Something isn’t right. Anyone know what might be causing this!?