[widgeon13]

Have you been out of the country recently, eaten any strange foods. Had a similar experience many years ago and just ate dry toast and water for over a week. Never did find out what caused it. That was back in college so it could have been any number of strange behaviors that I pursued.

Hope you get to the bottom of this, so to speak and feel better very soon. In the meantime drink lots of fluids to stay hydrated.