How can I prevent future intestinal obstruction

Condition analysis:
Good grief, that's a lot of pain and obstructions. The only suggestions I might have, you've most assuredly heard before. Increase fiber, fruit, lots of water, maybe probiotics. As my father was a surgeon, I learned a long time ago, bowel obstructions are no walk in the park. I hope you find an answer to your problem.
Peace,

Instructions:
1) Drink more water
This allows you to prevent any blockage in your GIT (gastrointestinal tract) and should maintain the proper function and health of your colon. More water in your system allows your blood to carry more oxygen to all the parts of your body. If your GIT is well-supplied with blood, then you can be assured of its proper functioning.
 
2) Increase fiber
This enables you to flush out the toxins out of your body in a more efficient and regular way. Fiber can be obtained from food items like wheat, cereal, oats, rice, leafy vegetables, and fruits. There are also fiber supplements and fiber fortified drinks that may help you get the ideal amount of fiber that you need everyday.