GAD &depression or else? Unhappy!

I have many backs in my b.tech but still i dont know why i cant able to study , i know if i dont study now ,i will be in more struggling situation still i dont know why i am unwilling to study . It takes whole day to study only a small chapter , it was happening with me from 10th standard but that time it was just fatigue , and that was a sudden change in my happy life My mother is a schizophrenic patient , but i dont have any psychotic symptoms , I spend whole day walking here and there and fighting with thoughts , i dont have control over my thoughts and it is making me mad Doctor told me that i m suffering from GAD and depression both & prescribed me escitalopram 10 mg for 40 days but it just improve my breathing and appetite nothing more Now he add bupron xl150 But again one of yr doctor told me not to take bupron bcz of its bad impact on anxiety Now what to do ,i dont have faith in any psychiatrist bcz they all different I suspect my spouse, fatigue, slow breathing,unhappy