Recent Sleep Problem

Hey everyone, thanks for readin

Well, here is my problem: recently, for about five days now, i've been waking up around 6 or 7 AM. This has never happened before in my life. Ive always been a heavy sleeper. During summer vacation i usually sleep at least 10 hours a day if not more. I usually sleep around 3 or 4 AM and get up early in the afternoon. But these recent few days have been scaring me because i haven't been able to get good sleep at all. I've only been getting just a few hours. And when i wake up, it's not like i'm still dizzy and can go back to sleep, I am FULLy awake... so i pretty much have to just get up instead of going back to sleep. I do get sleepy later during the evening, when i usually fall asleep on the couch. But I don't want this.. because during the evening is when i'm usually the busiest with things... -.- Because of my lack of sleep, my eyes hurt the whole day pretty much and i feel extremely apathetic and tired towards everything... I am only 18 years old.

http://sleepdisorders.itags.org/q_sleep-disorders_406369.html