Hi Jessee,
Did they fit your Husband with a plastic or metal stent when his bilirubin was high? If so the stent may have become blocked or like Lainy said he may have an infection which can cause bilirubin to rise. This can be sorted out with either a course of antibiotics or the stent being either cleaned out or a new one fitted.
What did the doctors say about the rise in bilirubin?
Bowel movements don’t effect bilirubin levels but your husband could drink alot to help flush the bilirubin out of his system. My Dad was always told to drink, drink, drink. He also took fresh lemon juice and warm water morning and night as we were told lemon helps to thin the bile.
Hope you get it sorted soon
Andrea