V2, I found that a strong cup of cascara sagrada and senna leaves works pretty good. You can take a hand-full of cascara root and a handfull of senna leaves in a 6 cup pot of water and boil. Let stand until cool. You can experiment how strong you want to make it. I make a lot and put in fridge and sip some when I need it.
Also have you try the lower bowel balance from Dr Christoher. It slowly corrects the bowels. If you search the older post "Onwards" has a recipe, if you want to buy the herbs and make it yourself. You can start off by just ordering the pills on amazon and see how it works for you. Its not as aggressive as a strong pot of cascara but it does work for the long run.
When you go to the hospital for enema, how come they dont see the worms blocking your colon? I pray for you, so sorry.