Recently realized I have been having issues with IRS-c for the last several months- since they ruled most other things out.had colonoscopy last week. currently not constipated, not diarrhea, but get cramps, slight headache, nausea, and just yucky feeling AFTER I go to the bathroom - more than before. Yet a lot of the literature says pooping relieves the pain. but not for me.. it causes or makes the pain worse. usually on left side anyone have any explanation or thoughts on this?