I have been out of breath too, its very frustrating I cant walk very far at all before I am out of breath and gasping for air. My neuroligist told me to go to my primary care doctor. So after putting it off for about 9 months I finally went. He first ordered a blood workup which came back normal. Then came the heart tests, ekg, stress test, etc. all came back normal. Tomorrow I go in for breathing tests. My stress level has went up since all this started. I will let you know about the breathing tests. Good Luck......