Hey there,
Google VCD and read up about it? It mimics asthma and may seem like it, but many athletes have VCD, none of the asthma drugs will fix the problem. So if your specialst notices that you are not getting better with asthma drugs, then definatley seek out and EAR,NOSE AND THROAT doctor, and try and see them WHEN YOU HAVE AN ATTACK! I know it sounds stupid, but it may be the only way to confirm and treat you properly. Go to cantbreathesuspectvcd.com/page4.html
I wish you luck.. Al the best ww