Pain abdomen. For the same.

Hello Sir, My child aged 3 years n 10 months is quite troublesome in eating. She has no habit of snacks or chocolates or food substitutes. She hardly takes a very little portion of food. These days she is complaining of pain abdomen as soon as she takes even a small spoon of food and if I try feeding her then she vomits everything out. She had a history of parotid hemangioma which was treated. Then she had no other foci of hemangioma elsewhere. Recent past I have put her on some antacids - Rantac 75 mg twice daily She had leucocytosis for which she was given Clarithromycin 80 mg twice daily One if my friends suggested that I should get her Upper GI ENDOSCOPY by pediatric gastroenterologist or Doppler USG abdomen to rule out Median arcuate ligament syndrome. I was wondering if I should get this done and I needed a pediatric gastroenterologist for the same.