I’ve always had week lungs. When I get sick it always ends up with a couple weeks of coughing/congestion and then clearing out.
About 2 years ago, my son and I were outside fixing a couple things on the house and I felt kind of the same way. It was cold so I figured shortness of breath was not that big a deal.
It seemed to get a little better. But then later in the year I would pass out for a few moments now and again. People thought it was falling asleep.
My daughter came home from college and noticed something was wrong. I ended up going to the emergency room and was put in ICU. I was told my lung function was down below 30%.