Clomid question

EBL00

I’m starting clomid, I’ve never had it before. I’m supposed to take it on the third day of my period, but my period is very very light. For the past two days it’s been so light I’ve barely needed a pad or tampon, and it’s been brown, not red. Do I count this as my period and start anyway? Or should I wait until it’s red? I would call me doctor but their office is closed.