Intermittent abdominal pain and diarrhea are typical symptoms that manifest during intestinal infections. You can visit your family doctor in order to seek a diagnosis. While there, you can ask about using spasmodic medicine (trospium) for your daughter if the pain becomes severe. You can also request more information about a dietary regime (liquid food without sugar and fats) and liquid supplementary (water and salts), which are most important for treating intestinal infections.