I've been on Metformin since my MC in August. It did make me very sick but it was more like it seemed to exacerbate PG symptoms. I could have sworn that I was pregnant that first month. After about two weeks I was fine and haven'th ad any problems at all since then. At my follow-up in October, all the cysts were gone! The medication works, so hang in there. I did take some anti-nausea medication recommended by the pharmacist at a nearby pharmacy and it really seemed to work. Feel free to ask me any questions. I'm also on my second round of Clomid with the Metformin