I am having some strange sleeping problems/patterns ?!

I am having some strange sleeping problems/patterns ?

for the last 3 weeks i have been struggling to get proper sleep.
the weird thing is i go to sleep and then i wake up really early. but when i wake up at say 4am and my eyes open, i dont feel like i have been sleeping, i just feel that my eyes have been closed for 4 hrs. then after a while i manage to get a couple more hrs of sleep if u want to call it that and then my eyes open again at say 7am, and once again i feel as if i have not been sleeping. has anybody experienced this ? am i suffering from insomnia. i really dont have any worries or anything and the honestly the only thing i am thinking of when i am in bed is this girl i really like

Insomnia (sleeplessness) is due to stress,
dietary and medical problems. By making
small lifestyle changes like having a fixed
daily routine, relaxing and eating properly,
insomnia can be cured. I found the information
at http://www.nosleep.in/insomniacause.html...