Suggest Cure For Dry Cough

Two months ago I had very low energy (not usual for me). I also had a continual dry cough. Doctor said my air flow was not good, gave me a Cortisone shot and said I may have asthma so put me on inhaler. Then both my legs became weak to the point that if I bent down I could barely get up. Next morning, my arms were weak down to my fingers. Still dry cough. Had a chest xray. Was told I had emphysema. (I smoked when I was twenty for about 4 years. I am 67 now). I was given another inhaler with cortisone. No explanation for my muscle weakness which did get better at times to where it was almost gone. The dry cough remained so I did a Pulmonary function test. 80% is the norm for my age etc. I scored 98 on intake, 91 on initial blow out but 65% on the in between blowing out. After inhaler, I scored the same on intake and blow out but improve to 75% in middle range. So, I have been using inhalers and some days I am a little better some days especially at work (office job) I get worse. Went to Allergist, no allergies. He suggested that the increase in my raspy voice and coughing could be from one of the inhalers and gave me a different one to use. He also suggested that I see an Ear, Nose and Throat specialist. That was yesterday. I used the new inhaler and it seems not to irritate my throat as much. However, I can hardly move my legs are so weak. Arms are stiff, neck is stiff and now my jaw is stiff. My doctor has not returned my call. I am getting worried. I am a very healthy person, energetic, not overweight, no high bp, no high cholesteral. I eat healthy and stay active and am rarely sick. Do you have any idea what is going on with me? I appreciate any help.