9 year old has stomach aches around belly button. dr says reflux and prescribed ppi but doesn't help. could it be something more serious? not h.pylori

Maybe: It depends on how long you've been on the medication and what you're doing to watch his diet to make sure that the food doesn't have a lot of acid or upset his stomach in anyway. Giving him a bland diet for 7 to 10 days would be beneficial. If the pain gets worse or doesn't get better than return as soon as possible to the doctor that prescribed the medication. Good luck.