Ok somenights when i go to sleep, i feel like someone is smothering me. i try to open my eyes and i can't. i try to yell or speak and i can't say anything. i can't move and it literally feels like someone is in my room on top of me. And get this! i'm not even in a deep sleep i am still awake! 3 people live in my house my mom and my little sister. i know what they look like and feel like so i know it's not them playing around with me. it feels like a big man or thing on my back most of the time i am on my back when it happends.. sometimes i can manage to open my eyes a little and i can see a shadow out of the corner of my eye..this has happend many times in my bedroom and now i sleep on the couch or in my mom's room. is it normal for this to happen to me mostly everynight??