My SOB came on out of nowhere. I tested positive for Covid 6 days later. All of the symptoms went away in two weeks but the sob stayed. I'm on month 16 now. I have some very good days, almost feel cured. Then it comes back in a wave of bad days. I have had all lung and heart tests come out normal. I was referred to a pulmonolgist but they didn't even examine me. Just said the x rays and the ct scan were found. Nothing further they could do. I've tried red light therapy, acupuncture, exercise, vagus nerve exercise, breathing exercise (4-7-8, Winn Hof, Buteyko, diaphragm. I've had massages, I walk a large dog daily. It's recovery/relapse over and over. Every single of the 4 general prac. doctors have said it's anxiety. I don't have sweaty palms, don't feel nervous, nothing. They have all tried to put me on anti-anxiety meds. I've seen a naturopath. $$$ worth of supplements. Sometimes I've taken an antihistamine which has worked off and on. I've had an endoscopy, nothing. Finally I relented and my doc put me on Prozac 10 mg. Nothing. Then 20, 30 and now 40 mgs. I don't know if it's working because according to notations on my calendar, I have the same amount of bad days and good days since this all started. I recently started working with a respiratory physiologist. She is helping me to retrain my breathing to tummy only. I also am to try to suppress any yawn or sigh by swallowing or sipping water. It's so hard sometimes. I have a machine to train my diaphragm to get stronger. I get worse with minimal exertion and have to lie down and slow down. I am giving it a 100% try. The prozac may be tapered off. When I started 30 mgs I felt it was (maybe) helping but that didn't last. I want to be referred to another pulmonoligist to see if there are any other tests. I want to make sure I don't have a pulmonary embolism