Well, as you notice, I haven't ruled out hallucinations, but it just seemed unlikely that I would hallucinate only in this one house. Why didn't I hallucinate any more after we moved? Kids do have vivid imaginations, and I didn't like to sleep alone. I also was only in the first grade, so I'm not ruling out those factors. It just seems weird that no one else would sleep there either.
On the side of the argument against an actual haunting, some new family has lived there for quite a long time and the house looks very pleasant (lots of flowers and such). If they were experiencing the same things, I would doubt that they would stay in the house.
As a side note, I gave the doll to a little girl because I threw it away and it somehow ended up under my bed in the new house and scared the holy living shit out of me. She died of anorexia and had a heart attack.