pcos sufferers with weight loss

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hi, im new to here!! i have just found out i have pcos, anyone else out there got it? im absolutely petrified coz i keep reading stuff on the internet about it and i keep thinking im going to go thin on top (i have a healthy full head of hair at the min) anyway ive struggled with losing weight for the past 5 years, i am constantly on a diet and training at the gym but i just dont seem to go any smaller, im not overweight but would still like to lose about 20 pounds. can anyone else relate and do you have any advice? x