Hard to believe

(AMFB)

     These day, I did experience a lot of weird things. First, our wall fan in our  bedroom suddenly open but no one is in there. My cousin ran to me saying that she was afraid; I hugged her tight and comforted her. I don't want her to experience what am I experiencing.

One time, I asked my cousin to get our baseball bat for we will going to play a baseball but she failed to see where it is so, I don't have a choice but to get it by myself. When I entered our house someone tapped my shoulder but when I turned to see it no one was around, then I saw the glass fell from the table. After it, I heard a voice who was murmuring something which I do not understand. Because of being afraid I just ran fast and leave our door open. 

What was it? A GHOST?