The Weirdest Thing Happened to Me Today

So I was at work, just screening a donor like normal.  I went to put a pen into the pocket of my lab coat when I whacked my elbow on the little rectangular organizer on the wall.  On the corner too! Can you say owwww!?  I've done this before, and reliving the experience is never pleasant.  So I grab my elbow {still have a donor in this awkward little booth} and say "ow" and whatever.  Next thing I know, I'm fighting to stay standing because suddenly I get crazy lightheaded.  Like seriously.  I usually only get lightheaded after I stand up from laying down for a while, and sometimes it's really bad like I totally loose my vision.  It's kind of funny because everything kinda fades and then I have to try to stay on  my feet and find a wall I can hold on to until it passes. This was worse.   I've never passed out before, but I'm sure I should have.  It was weird to come out of that screening.  I had to sit down because I was still feeling a little woozy.  Weird that a little bump would do that to me.