Hello Poly Cystic Ovarian Syndrome ( PCOS ) is a common disease in young female ( child bearing age group). The most characteristic features are irregular or dysfunctional menstruation or amenorrhea ( no menses for 3-4 months ) , weight gain ( obesity ) , hirsutism acne , alteration in FSH/LH ratio, androgen excess, ovarian stroma changes. All these findings are common in PCOS cases. Since your doctor advise you ginet 84 i.e hormonal treatment for PCOS. After stopping the drug , you didn t gain weight but this was due to the fact that your pcos symptoms were under control due to ginet 84 . For one year you didn t gain weight because your pcos symptoms were regulated by ginet and once effect was over symptoms re started . No doubt ,you are maintaining your diet and also doing exercise , but this is no sufficient . So in my opinion consult your gynaecologist and take a treatment for pcos and once it will be under control , you will not gain weight and your menstruation irregularity will be regular. Good luck.