I Feel Very Sick, What Could It Be ?

I feel very sick, what could it be? 10 points! All help needed!? I m 12. Yesterday at school I started getting a terrible headache and about 1-2 hours later my whole body started to crazily shake, my teeth shattered, my legs shivered, and whenever I would try to write on my work, my hand would shake. So, shortly after I couldn t take it anymore and my mom picked me up from school. I came balling to her saying I just had no idea what was wrong with me. I go home and lay in bed with 4 blankets so I could just feel warm, well actually my body was cold, but I was not. Anyways, so I check my temperature about 1 hour after I got back from school and my temperature was I think 100.6. Later though, it turned 103.6 and we were all very alarmed. So, my dad gave me two asprins to help my headache and temp. and later I was at around 101-102 degrees. That was yesterday. Last night my temp. ranged from 101-103 all night including today ( here it s 5:30pm) My temp. currently is 99.4 so I m not as hot. Anyways, here are my symptoms: slightly burning throat, it somewhat hurts to talk and swallow because it feels very closed up, although I m not sure that it is. Headache Ears hurting Cold What do you think I could possibley have? plus my throat is hot and I just want to lie in bed alllllll day which i did yesterday and today