I did pelvic floor physical therapy after giving birth, so it's not exactly the same, but I was flaring really badly during that time so I though I'd share anyway.
I was dealing with a weak pelvic floor at first, so the PT helped a lot with that, but not really with my IBS-D symptoms. However, I then continued to do the strengthening exercices for over a year and all throughout my second pregnancy, until at one point I noticed that I was overdoing it and was actually starting to experience a form of constipation. This went away after working on a too tight pelvic floor.
I think it can be very beneficial if you're having issues with incontinence or constipation/incomplete evacuation, however, at least in my experience, it did not affect my actual digestive process.
Karina (team member)