Positive OPK while bleeding heavily

Hannah

Currently on day 10 of a heavy (and unusual) period- and just received an almost positive opk. This is my first period after having my daughter 16 months ago. (I've exclusively breastfed the whole 16 months)

I have an appointment with my OBGYN in the morning because my period has been so heavy and is lasting so long. I guess I'm just curious if anyone else has ever experienced this? Maybe with a miscarriage?