21 day menstrual cycle causes
- how many days should my period last
- how many days should my period last on birth control
- how many days should your period last
- how many days does your period last
What is considered last day of period!
Why did my cycle changed from 28 to 31 days
Obstetrician-gynecologist
Obstetrician-gynecologist
Lauren Streicher, M.D., is an Associate Clinical Professor of Obstetrics and Gynecology at Northwestern University's Medical School.
Let's face it, the menstrual cycle is complicated.
The period itself may be easy enough to understand, but what's happening to your body every day in between?
Despite being told about a standard 28-day cycle, there's actually no such thing as a "normal" menstrual cycle—the timeline will vary from person to person.
In fact, one study published in the npj Digital Medicine journal found that only 13% of women had a 28-day cycle1, most peoples' were either longer or shorter.
Tracking your personal menstrual cycle can help you prepare for an upcoming period, inform you of the best time to have sex in order to conceive, and keep you in tune with your hormones.
It is measured from the first day of one period to the first day of the following period and split into three different phases. Here's what's happening to your hormones during each phase.