Is there a ghost in my house?

Well mind always make up things without notice. There was an medical search that when you dream. a part of the brain works. When it is as a nightmare it doesnt works anything. so Its just illusions. I Know you could hear it when your not sleeping. But maybe those illusions are still "Pasted on your mind" . The Hand.. maybe you invited someone or you sleep in the floor 1 & Some kid just put his hand on it?

Try asking your family about the "history" of the house you're living in. If nothing odd had happened after that, then maybe it was just a hallucination.