My husband has pain in his abdomen (upper) and lower intestines. Sudden onset. Moderate pain. Began 2 nights ago. Goes away, but comes back...extremely vague symptoms. No fever, vomiting, diarrhea, constipation...Says it feels somewhat gassy and 'noises' coming from abdomen. Antacids seem to help, but symptoms return. Web MDs symptom finder has given us about 30 possibilities. We need to narrow it down.