Answer: He might be suffering from Baby or also known as infantile colic.
Explanation: Infantile Colic or baby Colic is defined as episodes of crying for more than three hours a day, for more than three days a week, for three weeks in an otherwise healthy child. The main cause of Colic is often an allergy to milk protein in powdered formula, But colic can also be a reaction to specific foods in the mother's diet. This can sometimes cause stomach pain.