Help!!! Does anyone know what this might be?

Mckenzie

So i woke up yesterday morning with pain in the lower right side of my abdomen hurting but i brushed it off and went to school. Throughout the day it progressed and it made me not want to eat anything then i started getting a headache. i came home and i slept till about 9:45 which is when the pain started getting worse so i to a Phinne grin and went back to bed and slept till 2:45 this after noon. I havent eaten and the smell of food makes me want to puke does anyone know what this might be????