Suggest Treatment For Pcos With Irregular Menstrual Cycle

hi, I m 25,married having a problem of pcos with irregular menstrual cycle i had femilon last year and got my periods regular bt now i m getting same problem again as i wanted to get pregnant so my doc now suggested me a dufaston as she said my et is thin and also gave me ovacare with folic acid my question is Are these pills safe and for how much time i shoul take ovacare and folic acid pills??