Shortness of breath. Situation of panic.

I had this anxiety from nov 23 2020 which got better after taking paroxitine for few months and post which I tappered the doses. From last 7 days I have just shortness of breath no fever,cough. my RT pcr and antigen was negative which was done 2 days back. I got a echocardiogram done which was normal to. I got a hrct scan which I have attached. I had tb in the past for which it shows the scar when ever I take a xray or ct. I went to a pulmonologist who gave me antiflu 75, prednisolone 20, azithro 500, vit c and zincovit. Also areocort puff. Not sure if I am having this due to anxiety, covid or any mild viral infection. I have been taking medicines noted from 2 days. My oxy saturation is b/w 96-99. Any advice will be helpful in this situation of panic .