Totally AAAAAAHHHHH!

Ok, senior year isn't going my way AT ALL!!!!!!! For college, I think everything is set meaning sending all my crap in maybe except for some teacher recommendations. But here's my problem, I'm about 80% sure that I'm going to fail 1 class (maybe 2) for the quarter. I've never gotten an 'E' before in a class!!!! So if I get accepted into a university and if I decide to go there, I wonder if they'll revoke my acceptance. I'm not sure if it's revoking...more of nullifying. That sucks!!!! I'm terrified.