Advice?

Rianna
I was diagnosed with PCOS about 18 months ago. I suffered from irregular and loss of my period, cysts on ovaries, and weight gain (not insulin resistant though). I have worked with a Naturopathic doctor and an acupuncturists to work on my fertility. Doing that combined with being vegan since 08/15, I have now had a consistent period every month for the last 8 months. 
I am kind of wondering if anyone has had a similiar situation where they have been super clean and healthy with diet and exercise and my hormones are regulated enough for me to be menstrating, but I have gained 20lbs in the last 18 months? Any advice?