I've got POCS and was put on metformin in September. My periods before that were 21 days apart but I wasn't ovulating. I had a suspected miscarriage in October (hadn't taken a test but had tiny amount of bleeding in the period before then a random very heavy bleed which my doc said she suspected was a MC.) now my cycle varies from 25 days to 32 and isn't regular. Has anyone else had this? X