My husband had inguinal hernia operation 8 weeks ago. He has had abdominal pain since and it has been worsening the last week or so. Symptoms are abdominal pain (severe flinching causing when pushed), diarrhea and constipation (depends on the day). Sometimes chills and nausea. We have been to the ER twice, cat scan and ultrasound... still they find nothing. It is getting worse. Thoughts?