I have had most of these possible signs! Once I went on a camping trip with my family in Big Sur Ca in a camper and woke up in a car that was parked 5 or so cars down. My brother was at the camper door when I woke up. I wasn't sure if I woke up because the car light went on or because my brother was calling me. I was confused. I never talked about this with him. When I got back became ill...throwing up. This is just one experience. I am a bit afraid to talk about this. Just thinking about it might bring on more experiences. But for some reason I also have an urge to look into it. Thanks for your post.