Hello and thank you for your question. I'm sorry to hear that your son is ill.
If he is vomiting and having stomach pain with non-diarrheal stools, probably should be seen by a doctor.
Although it is possible that it could be a mild case of gastroenteritis, you would definitely want to make sure he doesn't have something more serious like appendicitis.
The beige color of his stool is not particularly concerning. Stool colors that are cause for concern are white (liver problem), red or black (indicating blood).
Strep throat can also present with stomach ache and vomiting in children, so getting test for a streptococcal infection is probably a good idea as well.
If the abdominal pain becomes more severe prior to the appointment tomorrow, you should take him to the nearest emergency room for evaluation.
Glad to help. In the meantime, until his appointment, I would avoid dairy-containing foods. These can often increase stomach discomfort and produce increased intestinal gas. You might try an anti-gas medication called Simethicone to reduce any cramping.
Ok. I'm glad his stomach pain has improved.
You're very welcome!