First of all you did not clarify your age. If you are 45 to 50's; this could mean that you are going through menopause
. If you are not near these ages and are quite younger, you need to go to see your gynecologist. Bleeding this much is a sign of something wrong. Low blood levels from over bleeding periods is very unhealthy. This might be fixable by laser surgery
or even a simple birth control pill. My mother has had horrible bleeding periods since she was a teenager and they put her on a birth control pill to help keep her on track and raise her blood levels. It is very important to take care of yourself; I wish you good health.