What Causes Blurring And Twitching In The Eye?

Hi im 16 and have had lots of problems over the last 8 or 9 months. i was refered to and endo and was tested for cushing's. 2 of my tests came back positive but 2 came back normal. So my endo told me i was just fat and needed to lose weight. However, I still think I have cushing's. These are my symptoms- high cortisol levels, weight gain, bad headachs, my left eye twitches and goes blury all the time, i have big purpleish pink strech marks all over my body, i have no period, muscle weakness, im tired all the time, i recently had kidney stones, i have also been diagnosed with PCOS and Metabolic syndrom. And i dont think that is all because im fat. Please help me because i dont know what to do.