I have had many tests done and a CAT scan of my chest, but everything is coming back as normal. I was thinking its COPD, but I don't know.Ive had a stress test (on a bike), tested for asthma, sleep apnea, allergies, nothing comes out other than being normal. I have a problem off and on of not being able to take a deep breath. This occurs when sitting, standing, walking (even a short distance), exercise, putting laundry from washer into drier, when i get upset, cry, anything. Does anyone have any idea what it could be?? My doctor told me he can't help me because they have done what they know. Please provide your input, its greatly appreciated!View Thread