I've been having irregular periods for awhile now. Anywhere from 3 weeks to 3 months. Then I started having heavy bleeding during ttotm, so bad I went to the er. Eventually I was started on metformin for PCOS and I started having monthly cycles but the flow is light and lasts a long time. Im CD15 and still have a flow from light-medium, mostly light. Anyone ever have this? I guess Im out for next this month if I'm still having a flow now.