Severe persistent asthma

I have severe persistent asthma and I see an allergist. He's tried multiple medications for my asthma and nothings helped. I have had multiple ER visits, been on prednisone 11 times within a year, Azithromycin 4 times, Methylprednisolone once, Naproxyn once, and Teslon pearls twice. I have never been able to do activities. I continuously have been having asthma exacerbations. I was hospitalized at the age of 10 for 2 weeks in an oxygen tent, on oxygen and had to do my nebulizer 4 times daily because I nearly didn't make it. So I'm very lucky to be alive! I'm now 43 years old. I'm also allergic to everything environmental and 3 medications.