Everyone here wants to help. If you are sensitive to energies, you should surely be able to sense that. Everyone is coming from a place of caring and concern with their suggestions. I have not read this entire thread, but have read enough to get a good sense of you, and what you are saying.
While I certainly believe in spirits (and postive/negative energy), what people are saying rings true. You do have some mental issues. This does not mean that you are not being visited, this could still very well be the cause as you believe. It's unfortunate that you don't trust your family or the system, that makes it doubly hard. The system is not setup for the rare case where there is something going on beyond the ordinary.
You have to address both things: the physical and the spirital. Yes, seek a preist or monk, but also figure out a way to get help for your mind and body. There is a lot of good advice being given here, all with good intentions, try to find some that works and will help.
There are many here who believe in the supernatural, the unseen. Don't doubt that. Just realize we see more going on too. I have had experiences, I too believe. But you need to fight this on multple fronts I think.