I am sure you know that women with PCOS have a problem in conceiving naturally especially if the cycles are irregular. Duphaston will regularise cycles when you are on it. The advantage is that if you ovulate spontaneously you may just conceive, and Duphaston does well with no harm for baby. I would however, do a follicular monitoring for you; to know whether or not you are ovulating spontaneously - otherwise you will be wasting time.