PLEASE HELP- Shortness of Breath- Pressure in chest?

PLEASE HELP! My mom, 43 yrs. old, is having shortness of breath, chest tightness, she sounds like she is whispering when she talks because she can't get enough air to talk normal and pain in feet. My mom was diagnosed with bronchitis/ pneumonia on June 26; her white blood count was 17 and her lungs were bad in the x-ray. She was given Avelox 400 mg, Nohist-Plus, Preventil HFA and a shot of Roceferin. She went back on July 3 and was given Benzonatate 100 mg, Advair and a steroid shot. Still sick, she went back on July 30 and her WBC was good/ lungs were worse than at first. She was given M-End WC (cough medicine), Zolpidem 10mg, Prednisone 10 mg, Mucinex, and was told the AdVair made it worse and to not take it anymore. She still didn't get better so she went back on August 5. Her blood count was going back up and her lungs were the same. So she was given Factive 320 mg., Singulair 10 mg, Proventil HFA Inhaler, and ADvair and a steroid shot. August 7 she went to the Pulmonologist and was told her X-Rays look fine and they did the Spirometer breathing 'test' in which she ped with flying colors! The only thing he could see was that she was "Holding" a little air somewhere and was put on Singulair again! It hasn't helped at all! Everytime we've been to the doctor she has had a 98% or better oxygen level and her blood pressure is good. She doesn't smoke- no negative health before or in family history. (Her dad had a stroke at 45 yrs. old.) PLEASE, give me ideas on what to ask for... what to do! It seems like doctor's don't know what is going on.