Trelegy for mild emphysema?

I have been told I have mild emphysema. A catscan for a heart condition noted that I have mild bibasilar atelectasis/scarring. The pulmonoligist has me on trelegy once a day. If I had not been told I had empysema I would have never known it. No symptoms really, never had an exacerbation ( hear others talk about that, I assume its coughing fits and breathless feelings??). The trelegy makes me cough, causes a sore throat, and other side effects. At the trelegy site it says for use for moderate to severe COPD. It seems to be causing me more problems for having no symptoms to begin with. I did a breathing test, at the Pulm. office, and i guess thats why they me the trelegy. They said my lungs sound good, and in decent shape. Do I really need trelegy. Quit taking it yesterday, after bad coughing and sore throat from using it. Why am I on this with only mild copd???
I take way too many meds for afib, which is in check, and for newly discovered peripheral neuropathy, which is slowly getting worse, Help.