Gut-wrenching

That feeling you get when you put your toothbrush too far into the back of your mouth when you're on the very edge of vomiting where it seems as though someone is torquing your stomach with a wrench, and you manage to hold back the contents of your last meal.

What's wrong with you?
I just took too much while brushing my teeth, resulting in a rather painful gut-wrenching.
That sucks