Dreams Turn Real

It started off as a nightmare. But this isn't me asking for a dream interpretation, because it gets creepier. One night, I fell asleep and had a strange dream. I was in my living room, but none of the furniture was there. I looked around, feeling confused. A great flash of light came from all the windows, and then I started hearing different voices calling my name from all over the room. Then, someone comes behind me and pushes my shoulders, but then I wake up before I fall.

At first, I thought it was just a nightmare, right? But I've been having this dream for three weeks, every night. And then a few days ago, I felt someone watching me.

I was alone in my house, and I was emailing my friend on the laptop. Then, I heard a giggle coming from my room. So, as anyone would do, I went upstairs to try to see if someone/something was there.

When I got upstairs, no one was there, but I heard the laugh again. Out of the corner of my eye, I saw a streak of color flash out of the window, which was open. (I'm realizing now that I never opened the window.)

As quickly as I could, I left my room and started walking down the stairs. But something pushed me - and I mean push, I could feel the hands on my back - and I fell down the stairs. I'm recovering from a sprained wrist.

Ever since then, I feel like something is watching me. The dream went away, but others have come in its place, some scarier than before. Usually, they involve someone calling my name and begging for help, but I can't see them except for a flash of color. When I wake up from these dreams, I'm completely tired and I can't go back to sleep. I got about ten hours of sleep last week, and I'm not kidding.

It's really scary though, and here's the part I need help with: am I doing something beyond my control? Can I see spirits, or am I being haunted by one? Or is this my imagination?

Please, if you know anything, answer. I'm only fourteen, and I'm starting to think that I'm insane. Anything is helpful.