HELP!!! does this frase make sense?

No gluttin means to fill beyond excess usually associated with food and this is just my thought but "your stomach is to fill to excess" just doesn't have a ring to it

Frase is incorrect...it spells phrase.

Now for the answer to your question, in casual dialogue, you could just say "you must be stuffed" to imply that that the person you're talking to has eaten as much as or more than he should be able to eat. If you have to sound more polite in case it's a formal situation, you could say "you couldn't possibly eat anymore" or "you must have had enough".

Yes, but most people won't know what that means. I have never heard the word "glutting", I had to look it up.

A better way to put it with the same meaning would be: Your stomach is overwhelmed with food.

just say "OMG! your stomach is about to explode because its full of food!!" It makes a little more sense