C.P.
A few months ago my daughter had something like that. My pediatrician told me that it was a flu and a cold at the same time. Usually the flu comes first, but in some instances it can happen at the same time. Every thing you describe was the same as my daughter except she really did not throw up. As soon as I gave her medicine she felt fine. She did miss school for 3 days and on the 4th day she was fine.