It's been happening alot lately, that I haven't felt like eating because of it.

I ate 2 cookies today at school, for lunch. I have this acid feeling in my stomach, not gas. Someone said it could be from stress. I doubt it's from not eating though, or maybe it could be, but it feels like if I eat it'll feel worse.

Anyone have an idea? Anyone ever had this feeling?

This maybe be a stupid question...