Talk to Gynecologist on Pcos

It's been 3 months I haven't got my periods. I am having pcos since 3 years. I have done 3 months course of progeluton many time. Periods come regularly for like 2 months after leaving birth control pills. Last I had pills like 6 months ago although still having glucophage. Plz suggest me what to do to get periods regular.

Age 26 Unmarried Height 5'7 Weight 71