you are both wise and brave to break free of professional doctors of all kinds. until they can clean house and go back to their roots of doing no harm instead of the protection racket they have created, they are not to be trusted in any way other than knowing them personally, if that is even possible.
yep, sounds like it was something you ate - coming on suddenly, pain in the gut, nasty bowels. Iodine makes all of that less severe and easier to handle.
i have a friend who downs a glass of water with Lugols in it after every meal. he never has indigestion problems. he doesnt mess around, either. its either 8 or 16 drops, somewhere in there.