Ladies: 4 Reasons You Must Start Tracking Your Period, What To Keep Track Of

3. It can hep you be in control of your mood

This is especially true for women who are prone to moodiness, thanks to PMS. Most of us expect to be moody a day or two before the blood-flood happens. But PMS actually starts 14 days before the period. So, yes, if you feel like you are in a funk, but your period is still two weeks away, it could still be PMS, and if you track your period, it is easy to confirm that.