I am freaking out. please confort me or i'll cry myself to death.?

I logged into another students gradebook and for the update email option I wrote a very offensive email. Then I signed up for a fake yahoo email and had the email have the first and last name of the student and then I wrote an email to one of the students teachers (who happened to be mine to) and they said they didn't write that so my teacher sent them down to the office and figure out what was going on. Later, the principle said to trace the whole thing and figure who it was. BTW I called the girl (victim) and said my name is Devon. Dude please I'm scared out of my mind