It sounds like your doc is covering everything, and hopefully everything will straighten out. For what it's worth, your symptoms sound exactly like mine started out. For me, it's more air quality and allergies, and I can tell you that having a doctor who pays attention to your symptoms is invaluable. For the first year, my doctor just went with the "albuterol helps, you have asthma" method. No lung function tests, no maintenance therapy, no nothing except for the albuterol.

Then I had a period this may where I could not walk without getting extremely short of breath and had difficulty breathing at rest which the albuterol wasn't getting rid of, and after arguing with him, I finally was given Advair (I was freaking out b/c I had a tri coming up in one week). Then he gave me instructions on how to use it in a way that was completely different from how it is supossed to be used, probably because he didn't think I had a problem as my lungs sounded normal. Well, I went ahead and used it according to the regular dosing, got cleared up by my tri, and after it ran out, he refused to refill it because "I didn't need it." Well, after I moved I switched to a family doc who had done a fellowship in sports medicine and is a triathlete. I was immediately put back on Advair, had PFTs done (the values were low normal, but she was concerned because they weren't as high as they should be with someone who is fit). She then put me on a treadmill, did more PFTs, then gave me the albuterol, did another PFT, and surprise, suprise, confirmed that I did have asthma.

Aaahhh, some doctors are great, some are frustrating, but it sounds like you found a good one. Let us know how everything else goes. (and sorry this is so long, I just feel like talking (or typing ) today.