I have recently been having blackouts whenever I stand or up sometimes when I move to fast. I was trying to ignore it, but it is getting worse and my eyes are taking longer to 'clear'. Sometimes I cannot see a thing for over a minute, which is kind of scary. When my eyes clear I normally feel really flushed and like an egg has been cracked on my head and the cold liquid trickles down. It also takes my eyes at least another 5 minutes to stop being fuzzy completely. I also get incredibly dizzy when I stand up after the 'blackout'. I am really scared I am going blind or that I am going to pass out or faint. What is happening?