Woke up bleeding.. what could it be?

Royce
I woke up this morning because I had to go pee. So I sat in the side of the bed while my fiancé went and I was waiting to use the batjroom. It felt like I peed myself, but when I went to feel and check my finger was covered in blood, and there's blood all over the sheets. What could it be? My period isn't supposed to start for another 2 weeks and I do have endometriosis. This isn't like any period I've ever had anyways though. I'm also hurting really bad, which with ebdomitriosis is normal for me but this is more of an intense cramping and higher in my stomach than my typical pain.