What Is a Short Menstrual Period?
The usual interval between menstrual cycles generally ranges between 21 to 45 days, with the majority of women having an average cycle of 28 days. Menstrual periods can occur between two days to sometimes more than seven days, the average being 3 to 4 days in most women. It usually can be considered a short menstrual period when the menstrual bleeding lasts less than two days, or when the time interval between cycles is less than 21 days. The term eumenorrhea is technically used to denote a regular menstrual cycle.
