i hope that you are feeling better now.
i think the next step would be to have an echocardiogram to make sure that the cause of your shortness of breath is not from the heart.
Some viruses affect the heart and cause weakness of the heart muscle even though it is too early for the symptoms of heart failure to appear.
Even though the breathing treatment did not improve your symptoms (i am not sure whether you were given the breathing treatment empirically or because you had wheezing), i would recommend that you have a test to exclude asthma as a cause for your symptoms.
i hope that this was just a viral infection that lingered for a while more than it should have.
Thank you very much for using our website http://doctorslounge.com
and i hope that this information helped.
Yasser Mokhtar, M.D.