I've been dealing with IBS for almost a year and of course the belly pain that comes with the pack of its symptoms and not even a doctor that I've talked with has ever told me anything about food. It was always something about my stress, my fears, my compulsive thinking. Always something mental, not physical so I do believe that pain that has no outer cause has definitely one from inside. One that only us can deal with.
By the way...long time no see :)