I have PCOS and I have been on birth control for about 2 years now to help control it and because I am sexually active. I started Metformin about 4 months ago since I was becoming insulin resistant.
Recently every period I have been getting has been long and heavy, since I started taking metformin. Is this normal? Is the Metformin making the birth control not work? The periods are still during the placebo week, but I am worried about the effectiveness of the birth control since I am sexually active (and I am not trying to have a baby).
Any help/advice would be appreciated, thanks!