I've been feeling really bad and sick since last Tuesday, but I don't want to miss anymore school. I keep almost falling asleep in class ( which I usually never do), and I have the worst headaches. Its like whatever the teacher says goes in one ear and out the other. I made a 55 on a quiz because I couldnt concentrate, I usually make 90- 100 on most things in school. I sleep pretty good at night, so I don't know what to do, my stomach won't stop hurting either. What is going on and what can I do?