I have pcos too. Just a little warning a out Metformin, it's hard on your tummy for a while till your body gets used to it. Weight loss is suggested and my acupuncturist also says to minimize sugar intake. He probably wants to see you to see how you are doing with the weight loss and meds. Are you trying to get pregnant? Pregnancy is possible with pcos but it's a little more challenging because you keep making cysts on your ovaries.
All you can really do is manage it the best you can, it's not something that goes away.
I have only taken the metformin twice so far and no upset tummy (Thank Gpd) and I am already starting weightwatchers to try and help me lose weight. I go back to see the doc in about 4 months to see how everything is working out. As for the whole pregnancy thing I was hoping to really start my family in about 2 years. Having children is very important to me so we will be talking to the doctors about that too.
Btw the list of side effects scared the living daylights out of me when I first read them. Like I said though so far so good.