Vaginal bleeding that lasts longer than 7 days (normally lasts 4 to 6 days).
Blood loss of more than 80 mL (3 fl oz) each menstrual cycle [normally about 30 mL (1 fl oz)]. If you are passing blood clots and soaking through your usual pads or tampons each hour for 2 or more hours, your bleeding is considered severe.
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WebMD Medical Reference from Healthwise
May 10, 2014
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