Midnight Scare

Alright, so. My house is... As normal as the next guys. I live in one of the 'safest' neighborhoods in my city, which I will not post. I'm 13 years old and too smart for my own good. That in which I have researched so many ghost experiences, and witnessed one. It start off with, I never sleep in my room.

Well, sometimes I do. But not regularly, due to the fact I like falling asleep in the living room with the TV on to shake off the scariness of the dark. One night, I was watching TV at about 4:30 am. Right across from me, if I looked to the right, there was a door that led downstairs. I was sure I had closed it before I had gone to sleep. It opened; I swear to god, I saw it open. It kept opening, creaking, and then slamming shut. Well, not particularly slamming, but closing. I hear noises, breathing, at that. When I do sleep in my room, I sleep with the light on because I am so paranoid. Sometimes, my mom comes in and switches the light off. And I always wake up in the middle of the night, to see if anyone is there.

A few nights ago, I saw 3 dark figures. I opened my eyes, and kept them open. The 3 dark figures were moving around my room. As if they were floating. I was in so much shock, I couldn't speak. As movie-like as this sounds, I went to switch the light on (like I'd assume every other young girl would do) but I didn't see anything.

I always feel like something is with me, even when I can't see anything. I'm never alone... There's a presence within my house. Plus, in the kitchen, I have a cooler. Like, where you press a button and water comes out. I always hear things coming from the kitchen, like someone's getting a glass of water but I'm the only one awake. Or someone sits on the chair, and I can hear the legs of the chair move.

Is this just paranoia kicking in, or is there actually a ghost, or several of them, in my house?