How can I determine normal versus heavy menses?
Heavy menstrual bleeding (menorrhagia) is a common problem for women. The worst cases of excessive menstrual bleeding can cause severe anemia and even require blood transfusions.
The menstrual cycle is not the same for every woman. On average, menstrual flow occurs every 28 days (with most women having cycles between 24 and 34 days), and lasts about 4 days. However, there is wide variation in timing and duration that is still considered normal, especially if your periods began within the last few years.
If you completely soak through a sanitary pad or tampon every hour for 2-3 consecutive hours, this is considered a very heavy period. A prolonged period is one that lasts longer than 7 days.
- When Should I Contact an OB/GYN
- What Causes Heavy Menstrual Bleeding?
- Diagnosing Heavy Menses
- Treatment Options for Heavy Menses
- Endometrial Ablation Treatment for Heavy Menses
This information is provided for your information. It is not medical advice and should not be relied upon as a substitute for visiting your doctor. If you need medical care, or have any questions, please contact your obstetrician-gynecologist.

