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The following may be symptoms of fecal impaction: 1  Being unable to have a bowel movement. 2  Having to push harder to have a bowel movement of small amounts of hard, dry stool. 3  Having fewer than the usual number of bowel movements.  Having pain in the back or abdomen.
Bloating. Another common symptom of irritable bowel syndrome is abdominal bloating. The bloating can cause a feeling of fullness and the appearance that the abdomen is distended, according to University Hospitals. Babies can also have gas and may experience nausea and vomiting as a result of IBS.