it was trying to suffocate me was in bed this black image it looked like a man but black and misty but you could tell it was a human like figure; That part sounds like shadow people, but they are often said just to be there draining/observing you. But i dont have any experiences with shadow people, so I cant say its one.
I would recommend going to a doctor as previously stated, but cleanse your house, with sage for an example. And then put out protective talismans in your home and carry one with you.
I sadly cant say what the rest is.