Dysfunctional proliferation - what does this mean?

Hello I'm about 2.5 years in peri-menopause. 18 months ago I had a D&C, while the biopsy was clear my gynae told me today there was dysfunctional proliferation. Over the past year I've had 2x very heavy periods and 3x very light ones. My gynae said this could be a pre-cursor to pre-cancerous cells. I'll now have to have an ultra sound and possibly a biospy and another D&C. Has anyone out there had something similar? How many D&Cs can one person have?

Exhausted Lindybop