Hi Doctor...i Am 27yrs Old Having Pcod From Teenage.i Have

Hi doctor...i am 27yrs old having pcod from teenage.i have irregular menstrual cycle.since i have insulin resistance i am having daily 1000mg glucophage as per doc said.i reduced my weight along with that but periods are not yet coming.can i have duphastone every month to get my cycles?is it safe to have it continuously?also i tried clomid 100mg which didnot help me to ovulate.can i increase the dosage the coming month?or is it ok to continue clomid for 2 more months?