What to count as first day of period?

Crystal
So just curious... I am having brown discharge (a couple days early) but my period is pretty much due any day now. I'm pretty positive it's not pregnancy bc my boobs stopped hurting. But do I count this brown spotting as the first day of my period or should I wait until it is full on red blood period? 

Glow Resources

Let’s Glow

Glow is here for you on your path to pregnancy

Glow helps you navigate your fertility journey with smart tools, personalized insights, and guidance from medical experts who understand what matters most.

25+ million

Users

4.8 stars

200k+ app ratings

20+

Medical advisors