I think it’s amazing you’ve not been sick! Maybe you’re dong all the right things. 🙂 I was sick a few months ago but before that it had been 2 years!! I’ll happily take that again! haha!
I don’t have IBS but used to have terrible gut issues… My biggest helper was enzymes!!! Lots of them every day… and right at the start of eating (especially anything I knew might be iffy or when eating out). Hope this might help you! Wishing you luck!