Ten-month-old babies, because of their young age, cannot express themselves verbally when their tummy hurts. Parents can help determine this through their expressions, actions and auxiliary examinations: 1. Expressions are usually obvious crying and painful expressions, which are not significantly relieved by parents’ soothing and touching, and continue to worsen. 2. The baby may also have nausea, vomiting, diarrhea, fever and other related symptoms when the tummy hurts.