Hi Feeling nauseous or vomiting is the symptom of underlying illness It may be gastric, small intestine, large intestine issues or metabolic disorders like hepatic(liver), Gall bladder or it may even neurological causes suggest you can take a centrally acting anti emitic like Ondansetron half an hour before the food and take something light and avoid baked foods/pizzas/burgers for time being Cereal based food is recommended and try to eat in limited intervals Do regular exercise/meditation for atleast 45 minutes which will help in digestion and managing stress If still could not get the relief than suggest to see a gastroenterologist Wish You Good Health Regards Dr Sridhar K