I was very tired one night, and so my eyes slowly closed. Suddenly, after they closed, I felt like I was spinning, my stomach feeling queasy. It almost seemed like I was being sucked down! I tried to open my eyes, but it was very difficult. After a struggle, they popped open. Then, suddenly, the closed again, for I couldn't keep them open. This time, I could see out of my closed eyes, and the view was getting farther and farther away. I started "running," and I struggled to open my eyes. Finally, I got them open.
This has happened to me many times in my life. PLease tell me if you know what could be going on.