Hi dm1125,
This may be a drastic suggestion, however, I have heard people who say they suffered as you do from asthma, declared moving to Arizona was a relief for them. Observe your surroundings, are there things that can be done to give you a better quality of life? Changing your air filters monthly, each time you vaccum throw away the vaccum bag (take it outside and put it in the trash, don't leave it in the house trash can), if you can afford it, remove all carpet, dust daily, wash your bed linens in hot water. Use sllergenic pillows. Put on a face mask when outside. There are many small steps you can take to help the suffering. Hope you get better soon.
Good Luck,
Faded Rose