Just wondering if vomiting is common in CF. My 10 year old vomits regularly 1-2x's per week.(Not including when he vomits his mucus up in the am) He starts complaining of a stomach ach,vomits, then he is fine. He does have GERD and is on 40mg of nexium. He recently started enzymes. He does snack during the day without taking his enzymes so I am wondering if that is the cause? Any imput?