question: I m currently having a weird feel mid chest. not pain but a heavy feeling and some air hunger like I can t fill up my lungs. last week my doctor did an emg and it was normal but ordered chest xray, stress test and echocardiogram which are scheduled for the end of the month. still having some shortness of breath some lightheadedness periodically. I m wondering if this is anxiety (already take Cymbalta) or something else?