My 6 year old has been having vomiting episodes that have increased to a few times a month. has constipation problems. cause? have appt already set up

? Cause: good that you have an appointment set up, preferably with a pediatric gastroenterologist, several problems can cause vomiting in this age group, gastroenteritis or stomach flu, allergies to certain foods or simply irritation, too much sweets/potato chips, and even anxiety, yes at this age, about a game or school for example, wish you luck with your doctor's visit and health for your child