47F Peri or something worse

Hello - I am at 47F with a long story like a lot of you. Back in the fall, I skipped a period and when it finally came it was a major heavy bleeding event that wouldn’t stop. I ended up going to the ER because I was scared. They did an ultrasound which showed a really thick endometrial lining. I was sent home and referred to my gyno. He suggested I start BC to thin out the lining and control my periods. I had two more ultrasounds to check lining and for any polyps and came back clear/normal so it appeared to work. I did not tolerate BC mentally at all - cause major anxiety - so I quit. First cycle after that was heavy, but not horrible, and lasted 10 days. The current cycle I am on was heavy again and I am on day 10 now still bleeding lightly! In addition to that, I have started cramping yesterday and today. Has anyone had something similar go on and it not show up on the ultrasound? I am scheduled for a biopsy in 3 weeks and discuss ablation or hysterectomy. Trying not to go down the rabbit hole!