I am 23 years old, otherwise healthy, and have had a cough, Shortness of breath, and chronic nasal congestion/inflammation with post nasal drip despite treatment for about 4 years now. I go to an allergy/asthma specialist and he says it's asthma and allergies. I also do have diagnosed vocal cord dysfunction but it hasn't flared up for the last six months. I have GERD too but have been and still am on Protonix for it. i know that can cause a cough. I am on Nasonex (steroid), astylen (antihistamine), zyrtec, singular, albuterol MDI, occasionally xopenex nebs, and pulmicort respules (i can't take advair b/c dry powder irritates my vocal cords). I have been put on xop nebs and pulmicort QID for a month now. I have been taking all of these medications with little relief. I am stil extrememly congested and still have the red patch in the back of my throat from the post nasal drip, and I still get SOB and tachypnic. I don't wheeze and my chest hardly ever, if at all, feels tight. I just feel like I can't expand my lungs well and my FVC and FEV1 fluccuate. with my FVC between 75%-100% of predicted and FEV1 80%-100%. I also have slight digital clubbing but I don't get reccurent pneumonias or sinus infections. I cough up clear/white secretions with little chuncks of yellow in it all day (not a large amount but some) Nothing is helping me...is there anything else I should get tested?? Some nurses and one DR I work with said I should get a sweat chloride test done, I know you can be diagnosed with CF in adulthood. Someone else told me to get an ANA test done. what should I do?