I dont know whats wrong with me help by thursday i hate the doctors?

Im 11 years old and mon i had a sore throat bout 100 degrees tues i noticed fever was fading to about 98.7 Sore throat terrible in morning and better round 11 cuz of some hot tea wens woke up felt great . So at school i have pe first in the morning i felt warm when i was in the lockers and when i was inside the gym I started doing some warm up exersies. I felt warm and asked my friends Cindy and Victoria to feel my head they said i was burning up but i wanted stay we all went outside to jog a few laps and a i was running to keep up with Cindy and Victoria i gradually started feeling more and more pain in my rib cage i didnt care so i speeded up and when jogging was done i was limping and the bell rung i went to my math cl my teacher said just go to the nurse i did she said i had a fever and a very red thorat so my mom picked me up we went home and i slept till around 6 when i woke it hurt to move, breath, and move my head. I had about 104 fever