Ever had the feeling of being watched?

I always feel like I'm being watched after dark. It's gotten to the point where I hide out in my room and don't leave but I'm too scared to fall asleep. I won't get up for anything, be it food, water (my sleeping meds give me cotton mouth), bathroom, anything. My sleeping medicine makes me hallucinate sometimes and I get really freaked out but even when I'm not on them, if it's night time I feel like there are eyes piercing my aura. About the sleeping medications, I was up just last week getting some water from the bathroom. I had the living piss scared out of me just by existing. Of course it didn't help to come back only to find my mom standing in my doorway waiting to make eye contact with me as soon as I walked in. I actually punched her in the face and knocked her down (not as a repercussion of anger, but because I was so jumpy and scared. And she knows not to sneak up on me or ambush me like that) after I turned on the light I saw what really happened, I helped her up and apologized. But sometimes I hear voices too and have vivid dreams. Just last night I had a dream where I woke up to my mom calling from the kitchen. "Tennyson, can you come up here?" then when i was halfway up the stairs I heard my mom (again) yell from her bedroom which is downstairs "Don't go up there, honey! I heard it too!" I was so freaked out I woke up sweating like crazy. But anyways. I always feel as though I'm being watched at night. I'm even too scared to look to the corner of my room to make sure nothing's there. It's as though my eyes are glued to the screen with fear. Please help! Do you think I might be schizophrenic? I don't know what to do. Lately my hands shake uncontrollably and I've lost conception of time (other than day/night). Just last month I even asked my friend if we had school the day before. And it was a Wednesday! I was at school and everything but I just didn't remember it. I need advice.