Menorrhagia is the medical term for unusually heavy or long menstrual periods. Many women have heavy flow days and cramps when they have their period. But menorrhagia is not common.
With menorrhagia, your flow is so heavy that you’ll need to change your tampon or pad every hour for at least an entire day. You also have cramps so severe that they stop you from doing your usual activities.
Heavy periods are sometimes caused by subtle health problems, and they can lead to other health issues. If you soak through a pad or tampon every hour or so on a regular basis, talk with your doctor. They may be able to help.