PCOS and cist issue. Hair fall since 1.

I have a cist of 25 cm..which doesn't has any visible symptoms like pain or anything but I am going through a heavy hair fall since 1.5 yrs and also a disturbance in my periods. So when recently I consulted one senior gyno..he suggested for the sonography then again the same results came out the cist was still of 8 cm...so after the checkup doctor said that your body is producing male hormones that's why u are going through the heavy hair fall and the consequences like skin dullness and some excessive growth of hairs on the body..so I just need the guidance that what I should do n which doctor I should consult and how can I confirm that whether I am having PCOS or not as I am so much worried for my hair fall issues..I have lost almost half of my hair in the past 1.5 yrs...please help me out.