What's happening to me?

[Venya]

I've been feeling so depressed. It's worse than usual. Usually I can just ignore it and forget about it, but now now.
There's this other thing that's been haunting me for a while.
Once my friend Savana came over to my house, and I went into my closet and waited.
I was waiting for her to walk into my room so I could jump out and scare her. (I do this a lot. XD I'm surprised she isn't used to it by now.)
While I was sitting in the dark closet, all of a sudden, it was like I could see through it.
I wasn't looking into my room, though.
I was looking into a completely white room with no furniture except for a white nightstand next to a white door.
Directly outside the closet doors was a woman lying on the ground. She was wearing a long, white gown and she had blonde hair. I didn't know who she was, yet she seemed familiar.
At first I thought she was sleeping, unconscious, or just lying there for some other reason, but then I realized I was looking at a corpse.
She had no eyes - there were just black gaping holes where they should have been. There was blood flowing from the sockets. Her mouth was open, and there was blood pouring out of that, too.
I was shaking violently. All of a sudden, the white room disappeared, and the closet doors came back. I couldn't believe what had just happened. I was afraid to open the closet doors.
I sat in there for a while longer, and then I heard claws scraping somewhere - inside the closet.
I heard a faint growling unlike any animal I had ever heard before. I heard my friend enter the room, so I pushed open the doors and ran over to her. I told her everything that I had seen. She thought it was creepy, too.
I have been having these graphic images coming to my mind for quite a while now, but instead of just seeing corpses, I saw how they died. Some were beaten to death, others burned, some were even cut repeatedly by knives. I never saw these things in my sleep. I only saw them when I was awake.
This hasn't been happening as often, but it still happens, and it scares the living h*ll out of me. I've gotten sort of used to it, but sometimes they really get to me, especially when they resemble someone I know.
Exactly what is happening and how can I make it stop?

[NormalRegularGuy]

See a doctor.  Now.   I've been through depression and what you describe reminds me of what happened to me.
Chances are you'll get better.  But at the stage you're in, you need help.  Maybe medication is necessary.  Until you feel in control again.  Do as the doctor says.

Good luck