I was going through that too and I ended up having a D&C after a biopsy came back with precancerous cells. Then we tried progesterin therapy, didn't help. So now I just had another ultrasound done and I am scheduled for another biopsy next week.
My gyno asked me if I was interested in having my uterus removed and I said sure I am done with it LOL. (i'm 44 and done having kids)
I will let you know what she says after this next appt on Wed I think. Sorry that I don't have any answers but I do sympathize with you if that helps
Hope your feeling better soon...Sue