Haunted

About three months ago I went and saw Paranormal Activity 2 in the movie theater, and since then I have still be scared of my own house! I know it's not real, but still it makes me paranoid! I had never really been scared in a movie before, until I saw that one, and today I was up stairs in the bonus room, when a printer not even plugged into a computer started to make noises like it was going to print. So of course naturally I think my house is now haunted...I need some serious help getting over this fear!