I don't know that there are any hard fast rules, but usually it is the leaving it in will cause more problems than taking it out.As well as is it something that full menopause (without hormones that can keep the uterus cycling in some fashion) will cure.With me I was getting heavier and heavier periods and when they got too heavy they did some tests to see what was going on. For me it was a fibroid they could remove easily. Until the bleeding got to the making me way too anemic stage we were trying to wait out and see if I would go into menopause before it got too bad.Luckily I didn't need a hysterectomy, just a fibroid removal.They do have a procedure where they burn off the lining. That way you don't have any tissue left to bleed. (It was one of the potential treatments I might have needed depending on what they had found in there. If it had been a lining thing rather than a fibroid thing). The advantage is you don't have the problems you get with taking the uterus out as you don't have to cut into the connections it has that hold other things in place.Anyway, good luck and I hope you feel better soon.K.