Ughhhhh. Poor baby. So sorry that you've got the miseries. Try some cooked rice cereal made with water, later on try it made with skim milk. Dry toast, lukewarm weak tea. Room temperature canned or jarred pears are very easy on the stomach, too. Later on, some unsweetened applesauce. Mashed cooked sweet potato (no skin). Plain cooked white rice. Lots of fluids or pedialyte throughout the day to replace the fluids you've lost, but take small, room temperature sips so you don't stimulate your G.I. tract.
Feel better soon!