My spouse went through the "It must be allergies" response for (only) three years, he finally went to a teaching /research hospital and discovered that he has IPF. Apparently, pulmonary fibrosis is the last condition (most of them work on a "rule-out" system encouraged by the insurance companies) pulmonologists look for—many, many people go through the same process and discover that they have not been suffering from asthma or allergies but IPF. I hope you find a well-practiced pulmonologist soon. Sometimes, I think the condition can be stopped from getting worse, but last we knew, that's rare.