i wrote and told you i had a feeling that someone heavy walked or moved on my bed. i could not scream or call for help. then ut lays on me and i cannot breath. then it just goes away and i wake up. could this be me having a heart attack or what could it be. our imaginations may be running wild i did throw a cup in the sink and it came back and hit me. i would like a serious answer to my question. please i am worried. mandy876