Drink water or sports drinks in order to rehydrate and replenish electrolytes. Eat crackers, plain bread and other bland foods.
Some recommend the BRAT diet (bananas, rice, apple sauce and toast). Avoid greasy, heavy or sweet foods and soda. Rest and keep your head elevated above your chest.
Finally, drink ginger tea or peppermint in order to settle your stomach. in order to settle your stomach.