I threw up in my mouth a little bit - A way to tell people you're so repulsed you're almost ready

A way to tell people you're so repulsed you're almost ready to throw up but not quite.

I saw my dad eat a whole bowl of soup and I threw up in my mouth a little bit.

I watched my teacher eat a sandwich with mayo and I threw up in my mouth a little bit.

I saw my friend eat a plate of pancakes and I threw up in my mouth a little bit.