I have celiac. i ate a piece of candy x2 days ago. i have not been able to stop vomiting. i cannot keep anything down, including liquids, gluten free?

Unrelated.: Hi. Yes, candy is gluten free. Even people with celiac disease being very compliant with diet can get a viral gastroenteritis. Your vomiting is not related to the candy consumption. However, the vomiting and inability to keep things down places you at high risk of dehydration and acid/base and electrolyte abnormalities. Try to sip things like Gatorade. Don't wait too long to see your doctor.

"Enteritis": Sounds more like an infectious cause of vomiting. this could be food related, which can happen from food the day you ate it, but sometimes up to a week after. Or something passed person to person, which also generally takes a few days after the contact. If not keeping down fluids still please be seen.