Dark Presence Hovering Over Me

Two years ago, my mother came home from school (she's a high school teacher) pale and tired. I was told that one of her students (religious Christian) had a demonic-like episode in class. This student's eyes were rolling back and she started to scream in what other students told my mother was "tongue" or Ancient Latin. Her original sweet voice had changed into a dark harsh voice and she was pointing at people as she was saying certain things. I found it creepy. VERY creepy. My mother was uneasy the rest of the evening and she didn't want to talk about details or even mention the story again. I was a little weirded out as well because many people have told us that there is a negative vibe in our home and that evil spells have been cast upon our family as a whole and our home. I don't necessarily know if I believe in this stuff... Even after what happened to me that night. Is it psychological? Is it an entity from another world? Some insight would be great!

Half-way through the night, I awoke to find myself staring at the door. It was closed. I saw a tall dark figure (I feel like it was cloaked) standing/floating near the door. I wasn't sure if I was seeing things so I continued to stare at it. I felt my heart racing. I closed my eyes and reopened them and saw the figure getting closer. I then looked up to the ceiling and closed my eyes. I now felt like the presence was completely hovering over me (either leaning over from beside my bed or literally above me). I couldn't move. I couldn't breathe. My chest sank and I couldn't take a breath as much as I wanted to I felt all this weight on my chest. Almost like I was choking for air but nothing was actually touching me or my neck. Just my chest. I could not move. I wanted to scream for help or get up on the opposite side of the bed and run. My eyes were completely closed. Eventually I said to myself I need to gather the courage and try to get passed this thing. I said a prayer in my head and counted to 3 and somehow managed to get up and run into my sister's room (where my mom was sleeping as well - we were all a little scared). I closed the door and huddled into the bed with them heaving trying to catch my breath and crying. I do not suffer from nightmares. I felt like the presence was around for another 10 minutes waiting at the door. I kept saying a prayer in my head.

I realize after reading a few posts that I probably should have told it to leave and never come back. I have no idea what it was, but it was not a pigment of my imagination. This was real. This experience has bothered me for the last 2 years and I am often unable to sleep fearing that I might go through something similar or worse.