I was cutting a piece of wood on a table saw when it got caught up and kicked back and hit me right in the lower left middle pelvis area. Anyways after it hit me which hurt alot about a 1 minute later I was starting to black out then my hearing was going silent, after I sat down everything started to go away and then I went and got a drink of water and was all better. Question being is what could have a happened to cause me to black out? Shock?