Defining a Healthy Menstrual Cycle

According to clinical gynecological guidelines, a normal menstrual cycle in reproductive-aged women meets the following criteria:

  • Cycle Length: 21 to 35 days between the first day of each period.
  • Bleeding Duration: 2 to 7 days of active flow.
  • Blood Loss: 30 ml to 80 ml total across the period.
  • Cycle Regularity: Difference between shortest and longest cycle is under 7 to 9 days.

If your period consistently arrives faster than 21 days, takes longer than 38 days, or bleeding lasts longer than 8 days, logging with HerCare will help document these trends for medical review.