Suggest Remedy For Irregular Periods

Hello doctor. I m 21 years old and suffering from irregular periods. This has been the case since menarche.I used to be pretty plumpy back then. I missed a few cycles and then the next cycle would be extremely heavy and for a prolonged time. So,two years back I managed to reduce nearly 15kg. Since then I have pretty much not missed even a single cycle. But,it s still irregular. I either have heavy bleeding or prolonged bleeding with minimal flow. Adding on to this,I am anemic. Two months back I got an ultrasound done and it shows that I have a simple cyst in the right ovary and polycystic morphology of the left ovary was reported. I have consulted many doctors on this issue,they have suggested to first improve my hemoglobin level. What course of action should I follow?