Oh my goodness! What a scare!!!!!
Glad everything turned out ok, though!
Kisses to the trouble maker and a
big glass of Chamomile Tea to his Mommy.

Here's kind of a 'funny' story--maybe it will help you to 'validate' your freaking out (though, in my mind it is PERFECTLY valid--I did the same thing when Sophie ate a leaf off of my ivy!)

A little while back a friend of mine called her vet on the weekend--she was COMPLETELY freaking out. Her cat was "seizuring" and "choking." (Needless to say, this was her first cat EVER!) Yup, you might've guessed it...they got to the vet, and the cat threw up a hairball. Everyone got a good laugh from this--including the VET who was nice enough NOT to charge her!