Posted 2/27/2011 7:10 PM (GMT -7)
I would reschedule the Upper GI. The doc probably had a good reason to want it, if only to rule out GERD. Gas doesn't have significant weight, but you could have constipation or excess water.
Gas can be caused by celiac disease, appendicitis, gallbladder problems and food maldigestion. Have you recently been eating more soluble fiber, artificial sweeteners, sugars or complex carbohydrates?
You can try probiotics, but if you are at all concerned your doctors can help you best.