Hope you get well soon!
About 10 years ago I kept getting bronchitis and when I didn’t have it, I wheezed with a cough but had no other symptoms. They kept giving me stronger and stronger antibiotics but the cough remained. AFter a chest xray and pondering a move to extreme anti-biotics (similar to those given to Aids patients) I was referred to a pulmonary specialist. He was baffled to know why I had been given a chest xray and months of antibiotics because I didn’t have an infection. I had inflamed lungs. The lining was irritated (by then so was I) and sensistive and making me cough. He gave me and albuterol (sp) inhaler so my airways would open up (over the counter, hate the stuff -makes me tremble) so that I could then take an Advair (prescription) inhaler to soothe the inflamed lining. It worked. After a few weeks I discontinued both and I was fine. I do continue to have hypersensitive lungs to if I get a significant chest cough I get an inhaler to keep my lungs happy. This stops me from coming out of a flu and then going right into a secondary infection and inflammation. I don’t know if that has anything to do with your symptoms but I wanted to put it out there in case it was relevant.
You might try Quercetin and Bromelain. Quercetin is something found in pears and apples that may prevent mast cells from releasing histamine. Bromelain is supposted to be anti-inflamitory. Supplements, so no prescription needed. Research it yourself before you try it.