That sounds ALOT like sleep paralysis, something I have expereince my entire life. I have had all of those symtoms you described. I suggest learn to work with and accept the state..you cant fight it..go with it. There might very well be entities there, but its gunnahappen either way so might as well learn to get by while your there.

Evenmore, sleep paralysis is culturally assoiciated with spirit attacks and things like that..like the "old hag" syndrome.