Insomnia question... Help!?

This is my 4th or 5th question about insomnia. It just worries me SO much! It's almost 4 in the morning, school tomorrow. Insomnia kept me up again! I've been in a situation like this before... I thought "I'm not tired, may swell stay up all night and day, then it'll be easier to sleep next day." WRONG! I fell asleep in class and got suspended. Also, when I cant sleep and haven't for a while, I start to hallucinate. This insomnia is REALLY bothering me! I deal with this almost every night and haven't had a decent night sleep in almost a year, oh god... I need help. Serious answers please...