I've got cysts on my ovaries and AF disappeared completely for 10 months. My OB actually diagnosed me PCO rather than PCOS. I'm not overweight (have only just reached my ideal weight! have always been underweight) and my skin's good, no excess facial hair or anything. But he put me on Met. Maybe it's the blood results too. Perhaps he could see that insulin resistance was the major part of my problem. *shrug*. All I know is it turned out that Met was all I needed. Which I'm glad.. coz both DH and I did not want multiples (a big risk of Clomid).. friends of ours had twins about a year and half ago.. and they're a lot of work!

Side effect of Metformin is diarrhoea (for the first week or so as you get used to it). I didn't have this at all, but I felt a bit unwell, and really thirsty for the first couple of weeks. Nothing since. OB is also keeping me on the Met for the first trimester, as it can help reduce the risk of miscarriage, which is higher for women with PCO(S).