If it's warm out where you are break a sweat by doing some yard work take a hot shower after. Drink plenty of fluids and sweat that crap out of you. I had something earlier this year that was knocking me on my butt (end of Feb / start of March).

I ended up busting my butt for two days taking hot showers after working in the yard then piled the clothes on and literally slept for almost 24 hours straight. I took no medication drank tons of water (and sweet tea LOL). Stayed away from solids besides nibbling on crackers or some chicken noodle soup.

I take daily vitamins but nothing really worth mentioning. I did not take fever reducers because as long as your fever doesn't spike high that's how your body kills off viruses.