Brown discharge

Hi, I have PCOS and my periods aren’t normal so I take medication to regulate them however I’ve been having pms symptoms and now this brownish discharge. I’m thinking it’s my period coming which I’m excited about cause it means it’s coming on its own. I’m two days before my supposed start date but I haven’t taken my meds because we are also ttc so I have to wait a week. Ovulation was predicted on or after Christmas. Just looking for advice. Thanks