If by “pelvic therapy” you mean the pelvic floor exercises, biofeedback etc., my primary care doctor referred me for that awhile back after months of diarrhea with then no diagnosis of its cause. The therapist was extremely knowledgeable, caring and well trained in pelvic floor dysfunction therapy. Of course The therapy didn’t do anything to stop the diarrhea and at the time I didn’t think it was helpful. But now I am glad I went through the therapy because I have much better control when I feel an attack coming on—no more “accidents” while searching for a bathroom. So maybe your therapy hasn’t been totally unproductive.