I'm 16 and for the past month or so I've been having pretty bad problems with sleeping. I usually go to bed at 10pm so I get a decent amount of sleep before I have to get up at 7am for school (I usually woke up at 6 am anyway). But for some reason I started waking up at 3-5am every morning and I couldn't go back to sleep at all after that. I have no trouble actually going to sleep, just maintaining it. I started going to bed a bit later, hoping if I'll be more tired I'll sleep for longer but it didn't seem to work. I had a week holiday from school two weeks ago and during that time I was perfectly fine, and on weekends I'm fine too. Before the holiday and any time during schooltime it's always like this.
I also always seem to be very tired, have a headache and sore eyes at school, but when I get home I'm fine.
Can anyone tell me what this is about?