I'm not sure where to begin or how to explain. I have dreams when fully awake of places or things that I think I have experienced but never really have. It only last a few minutes when I'm fully awake. I see it and I completely forget what it was about when it's over, but I know it happened. When I have the dream, in the moment it seems real of a place I have been too. It's frightening and it makes me feel very uncomfortable. I don't like the feeling at all.
Happens once or twice a month and anytime during the day. Started a few years ago. Please help me understand.