Nausea, Vomiting, Right Upper Quad Pain, Weight Loss

I hope someone can shed some light on this subject: I have been dealing with intermittent nausea, vomiting and right upper quad pain with over a 21 pound weight loss since late january of 2005. My ultrasound of my abdomen and gallbladder are normal, the cat scan of my abdomen is normal. I had a gallbladder function study done and my ef is 81%- normal. I don't have gall stones, no wall thickening noted no sludge in my gallbladder but I continue to have horrible pain in my right upper quadrant after I eat. I have lost track of exactly what foods start this process but I can say that jello, gatorade ice chips and some other clear foods stay down. I have been admitted to the hospital multiple times since the start of this because sometimes when I start vomiting I don't stop and end up with my electrolytes off and dehydrated. I am seeing a gi specialist and he is questioning my gallbladder; what else could be wrong with my gallbladder.....My next test is a stomache emptying study..You eat egg salad with contrast (like that is going to stay down..Haha) and then a neuclear med machine watches your stomache and how it emptys.. Has anyone had something similar to this????