Sleep Walker!!!

I'm so frustrated today! I haven't been able to sleep for like that past 4 nights. I'll fall asleep for a couple of hours then wake up sweating and panicky and unable to get back to sleep. It pisses me off that there are no decent TV programs on that late at night and I'm just exhausted!!!! I should call the doctor and get a prescription to help me sleep, but i'm scared that I'll become dependent on it. Does anyone have any suggestions?