So I’m still not entirely back to 100% yet

I thought I was fine near the end of April, up and around, walking half the block, doing some light cleaning. But 2020 was not done yet. My lung pain and shortness of breath came back. Ive got a steroid inhaler now and breathing exercises. Finally, after two weeks of the steroid inhaler, I have not had shortness of breath or lung pain for nearly a week. What the heck hit my lungs?!  I tested