My story is much the same. I had weird chest pains so I went to my local hospital ER. They put me in the hospital for observation due to my age and cardiac risk factors. Everyone was tested in the hospital and though I had no symptoms I had Covid. I was shocked because I’m so careful. An X-ray indicated I had hyper inflated lungs consistent with COPD. When I went home I started walking in my house and finally got out and walked my usual two miles each day, then I had an asthma flare and when I walked it felt like I was breathing through cheese cloth. My oxygen was 98. So I got an appointment with Mayo. I had the pulmonary function test with my FRC below normal but all other numbers were good compared to last year’s test. A couple of weeks later I had a ct scan and was seen by a pulmonologist. I had a normal ct scan. It took me four months from having Covid but walking my two miles is now more enjoyable.