I have Extreme Hallucinations at Night!

This happens to me about 4-5 times a week and sometimes even more. I fall into this state of mind where my body is asleep but my mind is awake and this causes me to have hallucinations ranging from skulls, demons, rainbows, and even animals and I can even hear screaming very close to my ears and I cant move any part of my body without excessive force. I have full control of my eyes but i close them tight because the hallucinations are very vivid and quite frightening. I stopped being scared after the tenth or eleventh time because I was so used to it. Its been happening to me since I was about 14 and I am now 19. I did more research into it and realized that this could lead to psychological disorders. I can break out of this state by using all the force I have to completely, what seems like, shifting my body when really I haven't moved at all. Has anything relatively close to this happened to anyone else?