You're braver than you believe, stronger than you seem, and smarter than you think
Anyone living with IBS will know the intense fear of being caught without bathroom access… and the dire consequences. Likewise, the quality and availability of toilets wherever you go will be far more important to you than to most. For various reasons (eg not just related to having irritable bowels!), various people have put together…
http://www.med.monash.edu/cecs/gastro/fodmap/ Monash Uni have done some really excellent research on IBS and have a wealth of information available in the FODMAP space. Their app is a flagship item, but if you don’t want to pay for it, there’s screeds of other dietary advice, health info, and resources available.