Actually whole day my mind is thinking about diseases. I have some symptoms like upper back pain ,chest tightness,heavy breathing fear and negative thoughts always runs in my mind that am going to be very ill. All of these symptoms are not regular they r sudden at any time mostly when I have nothing to do when any of the symptom happen I close my eyes to look what the hell is going in my body but then there is nothing. I used to avoid public places cz I hve a fear tht smetng will hppn to me der