Hi I am 29 years old, married since 2 months.menstrual h/o: very irregular past 6 yrs ,3/ 2-3 mths. Thyroid assay and hemoglobin normal.Usg showed pcos. All tests done 4 yrs back and also one month back.my weight is 50 kg height 151 cm.advised to have metformin for 1yr and norethisterone to get withdrawal bleeding when the amenorrhea persists more than 2 months.Have had metformin regularly and completed the course 3 yrs back.Advised that ,while planning for pregnancy further tests and treatment can be done.Am having amenorrhea past 3 months preg card negative , done three times and consulted a doctor.Again usg and blood tests done except for pcos all other normal.To get menstruation primolut n tablet 5mg once daily given for 3 days.But i havent got periods yet after 10 days of tablets .Earlier i had t same dosage to get withdrawal bleediongcal i repeat t dosage again..please give me a suggestion wat to do next. can i go with the tablets again.endometrial thickness 15 mm done on 15.01.2016.