I can't live like this for much longer!

[needtoknow423]

I was diagnosed with a sinus problem where my sinus drainage system was not working properly.  The surgery was not successful and I am now living with severe coughing with thick mucus and constant wheezing.  I get short of breath just from walking up a flight of stairs, and severe headaches from the coughing.  I have been to almost every specialist out there, and no one seems to be able to give me an answer.  I am on an inhaler, but have never been diagnosed with asthma, and it has only been in the last year that I have been having these problems.

I could be wrong, but as far as I can tell all of these symptoms started after having a gastroscopy for the cough.  I was put on medication to which I had a reaction and then they prescribed something else.  I dont know if the gastroscopy could have caused it??

I hope someone has some ideas because I'm really running out of faith...