Yeah, this started happening to me all of a sudden. Giving blood was never a problem, then I fainted twice. It was both times after fasting for 12 or so hours, very very weird. One second I was reading a dilbert comic on the wall in the examining room, the next I was in the Dilbert comic, then BOOM, it was like the camera angle in the movies with all the Doctors and nurses looking down at you and super bright light behind them.
So, just recently I had to do it again and was fully ready to pass out, but I didn't...I also didn't have to fast.
Now, much weirder is this one:
I had to go in for an eye exam about a month ago. the Doc puts in some of those eyedrops in one eye so it will dilate and sends me to wait in the waiting room for them to take effect. While I'm sitting there, I start feeling all light headed so I make my way to the bathroom to splash some cold water on my face, this is when I realized I didn't know where it was, so I staggered up to the front desk adn asked...at this point I was super drunk feeling. The receptionist says "Oh, it's just through the doors, turn right then left and then there is another door at the end of the hallway" Haha, ya right! I made it to the first set of doors and everything went black, but I was still trying to feel my way around...I hear "are you alright?" then the next thing I knew I was laying on the floor with people all staring at me. I felt reeeeally cool.
Now, why did I pass out from eye-drops?