Husband had a resection on June 13. About 3 to 4 weeks later he began having severe abdominal pain. CT showed inflammation, but couldn't tell if it was an infection or a Crohn's flare. He has been on Entyvio for about a year, and it seems to have been working. He has been taking Flagyl for over a week with very little relief. The pain is extremely bad. Anyone had any similar infections post surgery? Treatment?