Help Me. Please.

I'm going insane. I can't sleep. When I do sleep, it's dreams. But now the sleeplessness has almost outweighed the dreamfulness. I've slept maybe 3 hours the past few nights, and I feel like I'm going crazy. Like, literally, laugh at things that aren't funny, googly eyed, high voiced crazy. Does anyone have any suggestions? I'm not anxious, I'm not sick, I just.. can't..sleep. Help. Please.