I've never had Covid that I know of? But this all started when Covid first came on the scene. I was scared to death to go to the doctor. So maybe I had it and didn't even know it? It's been part of my life now for over two years. It comes and goes, I'll have days where it is always there then I'll I have days where it dosen't bother me and I feel good and can get decent full breaths. I've read alot of the comments on this thread and most all of the people here are experiencing the exact same thing. Doctors are worthless! They look at you like it's all in your head! No one really understands unless they've had this issue. I'm hoping that some day it just magically disappears!