Never Alone

Everyone thinks I'm crazy, but I know there's something in my house.
It started off as faint whispering from behind me whenever I'd leave a room; a conversation.
Things quickly escalated to moving objects, and slamming doors.
Everywhere I go in the house, I can feel myself being followed. By whom, I don't know.
As I write this, there are heavy footsteps approaching my room, but the door's open, and the hall is empty.
I don't want to, but I need to check it out.
Whoever reads this, please understand that no matter what anyone says, there is something here.