The Swoosh.

That's what I call it.  My medical dictionary includes: 

swoosh (verb) : an act or instance of swooshing or for a gastric bypass post-op: when you're feeling good, having a normal day, and then, out of nowhere, you have a "dumping" like episode that doesn't seem to be triggered by food. 

Today, I'm at work, standing there, and SWOOSH, it happens.  I feel like I must lie down, vomit, sleep, retch, fall down, put my head down, anything.  I took a quick break, walked to the bathroom and sat down for a second to decide if I had to puke or if I was just SWOOSHING.  I didn't get sick, and couldn't go potty, so, it was a SWOOSH.  I headed back to work, and sat in the backroom for a minute, to regain brain function.  It's like your thoughts get clouded, and you cannot function.  I truly loathe when this happens without a food trigger, because there is no explanation, and it makes you feel like something is wrong.  Perhaps it's a delayed metabolism response - or - the result of blood sugar, I don't know.  Anyways, it passed, and I felt as normal as one can feel when working eight hours on a Saturday at ten weeks pregnant anyway.