I had a track meet today and now i am sick?

i had a track meet from 6 am- 2 pm today and i ran 5 events. the 1/2 mile, the 1 mile, the 4 mile relay (i ran 1/2 a mile), the 500 meter dash, and last the 5 mile, in that order. i had water and fruit and afterwards we went out to lunch. when i got home from lunch i realized i had a fever, and a terrible headache. im pretty sure i didn't have a fever before the meet...but i cant be positive. my throat is sore and my back and stomach and legs are achy. i have a doctors appointment in 2 days.. so i will ask then..but any advice on what i have? what do you think it is? what should i do? is it because of the running?