Gaining

Hey..I just found out recently that I got IBS (Irritable Bowel Syndrome) So there are some things that I should not eat anymore or I'll blow up the toilet lmao. I think the big ones are..
No coffee
No dairy
No red meats
No greasy foods
No spicy foods
I can't remember what else there is, besides alot lol. What are some things I can eat that will help me gain without triggering another flair up?

ya im trying to learn what bothers me and all..im trying to find some fattening foods that wont bother me..its hard tho cause most snacks bother me alot

its also hard to find out what types of foods do bother me i know chocolate definitely bothers me.. i haven't had any dairy in a long time tho maybe i should test that out..