So scared, can't sleep, but I dont know why? ?

Same problem here.. when I first heard about Columbine, I was paranoid as F**k! It IS highly unlikely to happen. As for you being scared about spirits and what not... just stay up, go on the computer and watch funny videos on youtube or something until you get tired. Depends on how longs you've felt like this. IT will go away.. if not, then you should go see a therapist.