Psychosis Signs?

I started hearing voices outside then came the dead people everywhere! I was seeing people clear as day wondering around my yard, in my house, in the street, just everywhere really. They all had the same oblivious to their surroundings looks on their faces and I could see right through them like they were ghosts but definitely not ghosts.
While all of that was going on I was experiencing what I thought was something evil that would occasionally drop in on me to glare at me from the hall closet, move things slightly and mess with me both in my dreams and while I was awake.
I would hear it walk on my roof while it was in my reality.
I starting having huge problems with the same evil presence bothering me while I was sleeping.
It was messing with me bad! I thought I was truly experiencing something unexplainable.
I felt like the area i lived in was a hot spot for all kinds of unexplainable things and whatever was bothering me in my dreams and while I was awake was out to get me.
I thought I had been possessed by it through my dreams.
I even posted about what had happened to me in the dream forum on this site, and that is how I learned it was bi polar that I was experiencing.
I had no idea I was suffering from psychosis.
If you don't want to read the original post that brought me to the bi polar forum, I will just say that what ended the psychosis was an extremely destructive manic episode that nearly ruined everything I held dear.

For me reality checks become a problem when I'm sure I'm right to be paranoid and having these paranoid thoughts is wearing me out. That's when I need a good talk with a good friend, just to confirm that my interpretations are still not bullet proof and to remind me that I have a problem with mistrust. I don't think my paranoia is very severe though. I have never had real hallucinations (as in not knowing what I saw or heard wasn't real), so reality checking for that has not been one of my challenges. Maybe it's different for psychosis, maybe not, but I think that, generally, friends are our best tools for staying grounded.