I had a resection of my small intestine six years ago and for the first four years, right at the time of my waking up I would feel very ill, an intense urge to run to the bathroom. It would be about five or six hours and four visits to the john before the feeling was gone, until next morning. Then the cycle would start again.
What do I do to get better? Eat bland, boring food. Forget Chinese or Mexican, those are recipes for disaster.
Don't believe your surgeon if he tells you that you will be fine after having three feet of your intestine removed. You won't.