Many women describe their periods as heavy. It is often difficult to know whether periods are normal or heavy compared with those of other women. Some women who feel they have heavy periods actually have an average blood loss. Some women who feel they have normal periods actually have a heavy blood loss. Most of the blood loss usually occurs in the first three days of the period.
This is a companion discussion topic for the original article at https://patient.info/womens-health/periods-and-period-problems/heavy-periods-menorrhagia