Bryan, my sister-in-law has issues with side-effects of medicine that cause her digestive issues as well. The best suggestion I have heard and what seems to help her be less miserable is to eat yoghurt with active cultures. The more 'happy things' that you have in your gut the less discomfort you should be suffering.
God bless you and the folks on this board who have helped cover your medical bills. I have simular issues with my legs and thankfully have excellent medical coverage from work. This is an excellent example of a community that pulls together and helps one another.