I ate some meat just now

I don't know why this keeps happening to me. Both of my schools know that I don't eat meat, but yesterday and today, I have been given large helpings of the vegetable dish, smiles and giggles, and lots of "anio gogi!!" (no meat). I eat some of it, and I'm thinking to myself, "wow, this has a lot of flavor, they must have used sesame oil to the max or something". Then I do some further picking through the food and I discover, "oh, THAT'S why it has a lot of flavor". Now I feel really gross inside, my stomach doesn't feel right, and I have a little of a headache, and I'm kind of sweaty. I'm sure that some of my feelings are just in my head, but the fact is, I originally chose not to eat meat because I didn't like how eating it made me feel. I don't want to eat just a little and not know it, because then I will wonder why I feel weird. I hate that they think that sneaking a little in there is ok. Think of the politics of eating meat, Korea. Be progressive thinkers.