Cardiac ct, stres tst,holter, cardiac echo all normal.feel tired w air hunger when walk, pain left blade hand.mild reflux,clear lungs.obese.reason?

Exercise: It appears that all of your cardiac tests are normal, and that is very good. I do not see that you listed any lung evaluations, such as pulmonary function tests. This is a suggestion if you continue to have air hunger, as PFT can diagnose asthma or other lung conditions. This may be a matter of being out of shape because of your being overweight. See your doctor for an individualized exercise RX

Deconditioning: If the cardiac and pulmonary work up is negative (if not evaluated should do so) then the likely cause is deconditioning from lack of exercise and obesity. Check with your physician if you may begin a walking program and slowly increase your level of activity. You will notice as your functional level increases your shortness of breath increases.