Covid infection probably caused scar tissue which is now constant low grade chronic inflammation. It depends how severe your Covid infection was and how much sc

Covid infection probably caused scar tissue which is now constant low grade chronic inflammation. It depends how severe your Covid infection was and how much scarring it left from zero to minimal to a lot. You say you have severe chest pain but if you are able to breathe without artificial oxygen intake then I would say you have minimal scarring. I'm not sure how to treat scarring of lungs tissue since you can't "repair" it with surgery like you can other tissues or you can idk I'm not a doctor but you should seek treatment.