Hello....just reading all your symptoms, reminded me of when I had Covid... could not concentrate on anything. It was like it was too much for my brain to handle. Weird....and also, could not sleep at all! I ended up going to hospital because I took Paxlovid and it interacted with my my medication, Hydrochlorothiazide......my sodium got down to an extremely low number....around 100! I'm lucky I went to the ER when I did....was critically ill and spent 8 days in hospital. I am so grateful to the doctors and nurses at St Marys Hospital! THANK YOU FOR SAVING ME! 💖