My son had strep six day ago now he said that his stomach hurt and he want eat? what you think is going on with him?

Strep: Strep throat, in children particularly, may result in abdominal discomfort, occasionally severe enough to simulate appendicitis. It is due to inflamed lymph nodes on the lining of the bowel (peritoneum). On the other hand, if it persists past another day or two would take him back to the pcp or pediatrician and have this more fully evaluated.