drink 2 gallons of water in the next 2 hours and i guarantee you will feel 100x better afterwards and after 100 trip to the bathroom
Reason being is you need to dilute all of the bacteria in your body and stomach and piss a lot, too.
When I was in the military, I'd get sick on worst occasion (prior to training or field op etc) I'd drink shitload of water and the symptoms would start to dissapear in 2 days and on the 3rd day i'll be at 75%