I M 24 Yrs Old Unmarried I Have A Pcos

I m 24 yrs old unmarried I have a pcos problem for about 1 yr I m over weight also but following diet also walking but my weight is same it is not reducing I m taking medicine of glycomet for whole yr and 5 months krimson 35 after 8 months treatment I have taken the second scan in that also result is pcod only along with that I have diagnosed with gall bladder polyp of 5mm.what is the reason for polyp when I will be cure from pcod.and how to reduce weight