When I had an ongoing problem my GI DR. started me off with a over the counter supplement,
IBgard This over a short time worked very well,I started out at 2 pills 1/2 hour before each meal,as I got better I reduced it to 2 pills before my evening meal. This has worked very well and I have been have been pretty much pain free for more than 4 years now, He also suggested
Citrucel it produces no gas.
Between the two I have been able to travel and live quite comfortably.
You might run this combo by your DR.and see what he says.
Good luck with this.