Seeking Dx

Hi there Lilacs,

Yes I believe you should pursue tests until you receive a diagnosis.
Along with the vomiting, are you experiencing diarrhea, abdominal pain, fatigue? The blood work didn't reveal any nutrient deficiencies, anemia?

Here is what I tell everyone that asks about tests to determine if they have Crohn's or some other possible illness such as ulcerative colitis. Find a well reviewed Gastroenterologist in your area.

It is just as important for a Gastroenterologist to rule out other conditions since they may produce similar symptoms, for example, ulcerative colitis which may also cause abdominal cramping and diarrhea.
A physical examination by a GI, checking for tenderness or any inflammatory masses present at the lower right quadrant of the abdomen.
Also the GI should do a complete blood count test. This is to possibly reveal if Crohn's is present, Anemia, White blood cell levels, Differential, Platelet count and an ESR (Erythrocyte sedimentation rate). Also Stool tests.
Then further testing to be included, Radiologic and Endoscopic Testing. Such as a CT, Ultrasound, MRI, Colonoscopy and Endoscopy.

I hope this helps and please let us know how you make out.