Hello,
I think the thickness of the endometrial stripe really depends on where you are
in your cycle I have heard up to 12-15mm
in the late stage is normal. I would think a biopsy would be appropriate. I know I had a thickness of 4mm one week after my period, 12mm and 15mm later it my cycle. I had a biopsy and it wasn't too bad. Just in case you've heard horror stories. My reg. gyn. did it right in her office. I hope you will be able to save an ovary! Is the anemia from heavy bleeding?