Hello I have gone through your question and understand your concern. Vomiting after intake of food can be caused by various gastro-intestinal pathology. A good physical examination, history and diagnostic test like ultrasound abdomen, food allergy test will help rule out gastric pathology. Food allergies do cause vomiting in that case it is food that worsen the symptom to be avoided after taking the allergy test. Apart from consulting a doctor for vomiting, frequent headaches need examination by optometrist to rule out vision and eye pressure disorders. . Good luck. Hope your concern is answered. Thank you.