I am 23 yr boy with active lifestyle. Pursuing higher study in iit kharagpur and regularly play sports and go gym. I am facing problem in breathing from last around 8 months. It is quite sporadic. 10 days there is nothing and then like today from last 5 hours i am trying to take breath forcefully its not normal i mean. I dont take tension or stress. Very fit and energetic. I consulted a doctor 3 months back and he just gave me some tablets to overcome anxiety. There is nothing like this. How should i proceed further now?i think it is related to heart so i chose cardiologist.