i was prescribed advair by my allergist a little over 3 months ag...

i was prescribed advair by my allergist a little over 3 months ago. I not only developed an upper respiratory infection that won't go away but my voice has changed dramatically. i believe it is known as dysphonia. I have not responded to the two antibiotics, prednisone and antifungal drug that was prescribed. has anyone found anything that gets rid of these symptoms. my allergist has told me he can't help me anymore and i need a second opinion. he is the one who prescribed all of it in the first place. help.