Chest discomfort with mild fever since 1

I had fever since last 24th April I. E. Almost 14 days now. Still it is there. Initially I have taken dolo, azhithramycin, ivermectin, becasule, zincovit, vitamin C as prescribed by the physician. Morever, fever was always between 99 to 100 and slight chest discomfort. Oxygen level is 98 always and Pulse is within range 60 to 80. Done rtpcr on 5th may, it is negative. Reactive protein test dated 30th April, limit is 0.2 , IgG value is 2.32 (antibody test positive). CBC was also done, and it is normal, physician said. My Oxygen level is 98, Pulse 60 to 80 and BP is 127 - 90. I m completely able to do breathing exercises, no coughing and cold problem. However, suffering from IBD issue since last one year. Is chest discomfort with fever worry?? Kindly recommend me prescription.