I was diagnosed with PCOS in August of 2010 and was put on Metformin, one pill a day to help regulate my menstrual. I have been very active and lost 100 lbs before being diagnosed, and so exercise and eating healthy are not a new thing to me. I exercise 6 days a week, and since being on Meformin. The medication is working with one problem, but I'm not sure why it isn't helping in the other area of weight. I heard that people loose weight with Metformin! So I'm stuck as what to do?? Any suggestions??