Fever can be becoz of any infection. It could be a regular viral fever which subsided on its own, or it could be dengue, malaria or even Covid. Becoz of the given situation it is better to rule out the causes n see to what extent the infection is

Temperature 99.5 degree and above is considered as fever.. then you are safe to take dolo 650.. since 2 days if you have fever and its not subsiding .. then certain blood should be done to find out what is the cause of fever.. better you be isolated..Drink plenty of fluids,steam inhalation, salt water gargling, avoid cold food and drinks, avoid stress and tensions,sleep minimum 8 hours at night, monitor temperature and oxygen levels 6th hourly once.. if any alarming symptoms inform the health authorities nearby.