I am a diagnosed case of pcos since 5 years. Have been on metformin 500 mg bd since 5 yrs. Periods were more or less regular. Contrary to popular stats, I have severe menorrhagia and polymenorrhea. Now, since 6 months, my cycles have gone hay wire. I workout more or less but now my periods are back in 2 weeks and stay for a month or more. Insulin levels are fine, which used to be haywire earlierwhat to do.