Adult with bad whooping cough! Advise!!?

I'm on my 5th week of whooping cough. I finally went to doctor 3rd week to be told I had walking pneumonia. I was given antibiotics and an inhaler. They did not work. Went back a week later and was diagnosed with whooping cough. I was told to keep doing the inhaler every 4 hours and I was given an inhaler with steroids in it to do 2x a day (to keep the swelling down in chest). I also take the cough syrup with codeine in it (takes the edge off but does not take the cough away). All this seems to keep the coughing fits down. I also sleep elevated in a cool room with a cough drop in my mouth! I hope you get relief soon, this stuff in no joke!