I'd had coughs for 2-3 years-one a little nagging one and a horrid one that was intermittent bouts. I was in new city that was simply slammed by Covid and it was hard to get care for a more typical illness like sinus infections/bronchitis.
Later, an Urgent Care doc ordered an xray which showed showed a couple nodules confirmed by CT. A f/u a year later was much worse and looked like MAC. I finally started getting help. I lucked into a cancelled appt slot at Mayo a few months later after local pulmonologist had gone on emergency leave. Mayo made the diagnosis (BE; ruled out MAC after cultures negative) and plan. I'd also been found to have mild asthma once cultures were negative, Mayo doc started me on Advair and the little cough went away. Local ENT's got sinus issues under better control. Penn's pulmonary appointments had been several months out, but I kept it and like doc and stayed with them. Local.
The bronch's culture at Mayo didn't grow MAC (to their surprise) and my Penn doc's theories are that it was persistent aspirated sinus drainage (treated aggressively now) or that I'd had MAC and cleared it spontaneously. I've written about it so often, it's pretty old news. : )