Talk to Gynecologist on Pcos

I got my periods when I was 11 and I have experienced irregular periods since then. I have visited over 7 different gynae doctors in Lahore. I don't get periods on date. Sometimes I would bleed for 15-20 days in a go. Heavy bleeding. Sometimes I would just experience spotting. I have taken Diane-35 for quite sometime in 2014. Then in 2016. I also got venefor injections in 2016 due to iron deficiency. and now I visited a doctor a month ago and he said I have pcos and has recommended me the same med. Now I have been bleeding for more than 15 days even though I was taking Diane-35. I feel fatigued and tired. I am extremely tired of this condition and want a way out since this is painful and cumbersome. I also wonder if I have developed anaemia again. Aslo if there's any proper test for pcos cuz he didn't do any test just a brief Ultra sound before announcing it.