My 13 yr old daughter has suffered for the past 2 yrs w/moderate to severe abdominal cramping, gas, and nausea. We have met numerous times w/a nutritionist (food logs, ruled out allergies, etc). Her primary care dr. had an abdominal scan, endoscopy, blood & stool work ups, and further allergy testing. Everything was negative. We are stumped as to what to do next since they seem stumped.