I am suffering from anxiety from last 4 days. During evenings I cry for no reason and I get nervous a lot and my heart beat accelerates. I am not able to study as when I take my books I get nervous even more. It starts from afternoon and it is at peak in the evening. I am not going out from many days maybe thats a reason but when I started feeling this I go out for some time and feel better but now its not possible for me to go out all the time. I feel terrible at that time and many negative thoughts come in my mind. I have never experienced this and I want to get cured. Plzz suggest what should I do.