Thanks for your query,
PCOS is commonly associated with irregular menstruation
due to ovulation problem. Ovafar is given for induction of ovulation for usually 5 days starting from the day 2 and not for regulation of cycle. Duphastan is a progesterone. Progesterone is given for luteal phase support for progesterone deficiency
in the second half of the cycle.It helps in sustaining the pregnancy
after it occurs .
Hope it helps you,