I always have regular cycle but light period diagnosed with pcod/os early signs but no overweight or anything else. I started letroz and duphastone, fertyl-f folic acid and i missed period for 2 month and i am not pregnant. This never happened before. Do fertility medication create hormonal imbalance or its something else. I never ever have missed my period and never took any contraceptive pills. My doctor now has provided me meperate and my chiro and yamini to induce period and maintain hormonal balance. Please suggest