I am so frustrated with my doctor

Codi
Been TTC for over a year now with PCOS. Obgyn has me taking 1000mg of Metformin a day for my insulin resistance. I have been on the Metformin since October. And I feel it's not really doing anything for me. I am in the process of trying to cut down on carbs and increase my veggie intake. (I love potatoes and bread.) Today was my 3 month check up since starting the Metformin. I had a period on December 5th but not one since. My obgyn will not do anything else for me until I loose 10% of my body weight (25 lbs). She also referred me to a nutritionist and also said it would be really hard for me to loose weight. I am getting so discouraged over this whole thing.