I can't sleep and I don't know why?!?

it has been five days... the first 3, i was scared or paranoid to go to sleep.. i dont know why, but is was something that i could not help. yesterday, i was suddenly not scared anymore, but i still couldnt sleep. tonight i still cant sleep, so i was looking up ways to get tired and fall asleep ect and i ended up getting scared from what someone posted on this site.. so im still scared and i still cant sleep! im lactose intolerant, so i cant have warm milk, and i cant go to the kitchen and make tea or a turkey either. the only things i have not tried is sleeping pills, and hypnosis, and im only 17 so those are out of the question. please help me!! i have no energy during the day because of this, school is over, but i still have to work and run errands!! Thanks for your help