Help me to find best endocrinologist/ gynecologist !

I am a 23-year-old girl from Nepal, and I am facing the problem of PCOS and very irregular periods for about 10 years now. I'm planning to visit India so, I need to find an extremely experienced doctor who is specialized in PCOS and preferably a gynecologist or endocrinologist or even better a reproductive endocrinologist in India. Please tell me a doctor who is very experienced in dealing with long-term and severe PCOS, especially those with very irregular periods. Which kind of specialist gynecologist or endocrinologist or reproductive endocrinologist would suit me best in this case?