In terms of menstrual cycles, there are a variety of "normal" ones. But your period should not be a problem for you every month. If it is so difficult or unpredictable that it prevents you from performing certain activities, or that you are losing your job or training, you may have a health problem that needs to be addressed. Doctors check these things when they diagnose abnormal uterine bleeding: Your periods should be pretty regular. The duration of each cycle should not change for more than a week. And if the delay is less than 3 weeks or more than 5 weeks, this may be a sign of a problem. A typical period lasts 4 or 5 days. If your time is often less than 2 days or more than a week, it may mean something is wrong. Most women lose only about two tablespoons of blood in each period. It is believed that more than 5 tablespoons are unusually heavy, but this is difficult to assess. An unusually high menstrual bleeding is called menorrhagia. This condition may be experienced during the menstrual cycle, after having sex or after menopause. Bleeding during pregnancy is a very serious situation and if someone may experience it, she should consult with her Gynecologist on an immediate basis. Causes: It can be caused due to following factors such as; Hormonal changes When ovaries do not produce an egg Polyps or fibroids in uterus Infection of the cervix Cancer in the uterus A thyroid problem rarely cause this situation An increase in weight Treatment Options: These are several treatments that are suggested by the experience Gynecologists and these options include; Intrauterine devices (IUDs) Contraceptives Hysterectomy Endometrial ablation