Probably I have GAD

This is a very vicious cycle. I cant still focus on studies because my anxiety is too much to handle. My parents don't want me to go to a therapist or phycologist. They say that a therapist will take a lot of money just to tell u not to get afraid. They say parents can talk in a better way and help but after watching how do they really handle the situation I don't think the same. They don't want me to have any therapy but want me to score better grades. They say you just feel anxious only because you don't study and practice maths. But I don't know how to study when I am already feeling anxious.

My anxiety is really terrible that I almost every time feel anxiety. Its hard to relax and I don't feel like normal people. I feel anxiety over stupid things or even probabilities and about school (especially when I have to go to school the next day.) Besides if I talk about studies, I really don't like to study. Whenever I try to concentrate it begins anxiety as thoughts keep coming to my mind and it becomes so hard to keep keep studying after all. And to avoid anxiety I try not to open books again or sit to study anymore. And rest of the time when I am free and have time to cover my syllabus I spend my time listening to music, taking nap and doing all those things which makes me temporarily relaxed or distract me from continuous anxiety. 

Is there anyone who feel the same???