Talk to Endocrinologist on PCOS And Obesity, 21(unmarried)

I am 5'3 I weigh around 118 kg I missed my period for one whole year at age 13 (which i think is the mai cause of my obesity) I used to eat mud from plants when i was around 3-5 years old (which my mother thinks caused some sort of worms inside) I tried to reduce weight many times but i was never able to reduce it more than 15 kg, which after very few days came back i do visit restaurants often, but i always prefer grilled or baked over fried, never eat burgers or similar stuff. For eight months i had been suffering from unusual discharge for which i got my ultrasound done, some other tests like uric acid, cholestrol, diabetes, thyroid. cholestrol and uric acid was high, other things were normal. My ultrasound report stated that I had PCOS. The doctor's behavior whom i consulted was very unsatisfactory. Also i havent had my period after 26-june-2017. Kindly help me with medicines and diet plans. I shall be very thankful to you