That definitely sounds like a poltergeist, which is a ghost or spirit supposed to manifest its presence by noises, knockings, etc. I remember as a child sleeping in my bedroom one night when I felt a strange presence in my room. I knew that I was being watched by someone but was too scared to scream or even get up to turn on my lights. During that time, I just closed my eyes and hid under the blankets hoping that that presence left and surely sometime later it did. I am sorry that you experienced that traumatic event but I am glad that none of you were physically injured.