Im soo tired?

and its 9:47 am over here and im soo tired and i need to stay awake so i can get my sleeping pattern back on track 4 school. I've been on the computer ever since i have woke up which was 8:30 and i went to bed at 3 40 in the morning so i only had 5 STINKIN hours of sleep help me. What can I do to stay awake besides taking pills, drinking coffee, drugs. thank u and i am very cranky right now so i WANT A ANSWER NOW! grrrrrrrrrrrrrrrrrrrrrrrrrrrrr. sorry im really tired and if i lay down on my bed the instant i lay on it i will probably fall asleep. im 11 year old so no bad things and im getting ready for middle school, so i need to get my sleepin pattern back on track cause i would always go to bed at like 3 in the morning and then not wake up till 12 pm to 2 pm and usually i would wake up between that time SO ANSWER MY QUESTION.