Arimidex and bleeding?

I am 35 and had tamoxifien for a year, i was taken off it a few weeks ago after very heavy bleeding that had me admitted to hospital for a d and c etc…anyway i was put on arimidex ( no zoladex ) 5 weeks ago and had a scant show yesterday and today.Now my gynae said any further bleeding and I would probably have a hysterectomy etc…just wondering if anyone had experienced this or any other premenopausal women on arimidex ??