Mild fever, even if accompanied by aching and feeling unwell, should be tolerated. We should not dose up with medication and carry on with our activities. This exposes others to our illness and makes it hard for our immune system to work at its best.
Take your grandmother’s advice: feed a cold and starve a fever (but take a lot of fluids) and GO TO BED and sweat it out.
If your fever is approaching 104 degrees Farenheit or 40 degrees Celsius, then try to cool down with plenty of fluids. Work with the fever to keep it from becoming excessive, even if you have to take medication for it. But remember the purpose is NOT to reduce the fever to normal. That just encourages the viruses to multiply in your body and makes you a better host for the infection.