Covid has seriously messed up a lot of systems. I have spontaneous random shortness of breath sometimes. I can describe it as I become aware of my breathing as if it’s not automatic. Like blowing up a tight balloon. I have not had pulmonary function tests but have had heart mri which was normal as well as a stress test on treadmill, also normal. Have muscle twit he’s daily especially in calves and EMG. What has shown up is white matter hyper intensities on brain mri about a Yr ago. Neurolgist repeating it with dye. If it shows inflammation go for an LP. My Son had Covid at same time as me and I worry his systems have been damaged. He is constantly tired, adhd worse anxiety worse etc. Feel for everyone that don’t really know where this is going