my son is 6 years old and has a tedency to go of foods,he is a really funny eater will only eat softist foods no red meats at all, some times he bring his food back up after meals, i always though that it was that he feels sick becuase he not quite like what hes eaten if he thinks about food to much, his half brother had a narrowing of the food pipe from birth, do you think my son might have the same?