The other day I stood up from sitting on the floor. As with everyone that stands up too fast, I became very dizzy. I knew I was going to pass out, so I went right back down to my knees, thinking it would go away as it normally does. This time was completely different. Everything went dark, I began to shake, and no longer had any control over my body. I was completely aware of what was going on, but couldn't come out it. I'm sure it was about 20-30 seconds before I could see or open my eyes (I'm not sure if they were closed or not). It took several minutes for me to be able to regain my wits. I was absolutely exhausted afterward and pretty much the rest of the day. Since this happened my thoughts have been very scattered. I'm having a hard time concentrating, and thinking straight. It's been almost a week now. Any thoughts would be greatly appreciated!