This is going to sound weird, but it's really bothering me. For the past several nights, I've been waking up at 3am in the middle night, out of a dead sleep in the grips of an awful anxiety attack! I'm shaky, sweaty and jumpy, have trouble catching my breath and paraniod that there is something lurking in the darkness outside my window, trying to bite it's way through the screen! Has this happening to anyone else before? I know I sound like a freak, but It's very frightening.