As per information provided you you seem to have viral fever. you have mentioned which covid test was negative . continue with your medications for or another 2 to 3 days take lots of fluids if not better then see a doctor

Both the medicines you are taking I’m not according to your symptoms, You had not mention which test you took for Covid as it was the antigen test or RT .PCR. Are you monitoring your SP O2 levels you have not mentioned in above history SP O2 level monitoring is very important in Covid treatment. Pain in hand and shoulder can be due to weakness and Nerve damage caused by viral prodromal symptoms