Where is the stomach pain located? This question may sound gross, but what does her vomit look like?
I am located in Ajax. She does have some some constipation and has had an upper scope which showed nothing. She doesn't eat very much at a time and tends to throw up any time but when she's eating. The doc even sugested it could even be sychosymatic but for 4 years?
Welcome to the gastroenterology community! There are no doctors reading this page and the expert page for gastroenterology is currently not open to questions. If the only testing she has had is blood work and an ultrasound, then she definitely needs more testing done. She probably needs and endoscopy and a CT scan. Does the throwing up correlate with eating? Where is the stomach pain located?
Is it possible that she is constipated? I would insist on a upper and lower scope if she hasn't already had one.
When you say you took her to Sick Kids - where are you located? (I'm in Toronto)