The only thing you should notice after a tubal is possibly heavier periods with worse cramping. What you're describing could be caused by something else entirely or even by a complication from the surgery. Call your dr tomorrow.
I agree, I'm not an expert, but I don't think your tubal should affect your digestion. I had mine, and had a little bit of a "pulling" feeling inside (but I had a c-section too) and really no other side affects.
Other than the freedom that I felt!