Hi, I'm new around here too, and I don't have any clue what is going on with your ileostomy, but I do understand your concern.
I think if I were in your shoes, I would persist with the doctor. If he was non-responsive, I would consider changing doctors. Sometimes it's hard to remember that our healthcare professionals WORK FOR US, and they are accountable to us. To me, being brushed off is both insulting and unprofessional.
Sorry this wasn't some useful information, hopefully someone else may have some similar experience to relate. In any event, best wishes with this.
Type 2 Diabetes / Temp. Colostomy with attending hernia
"No, really....it's a medical condition, not a baby"