@lwbarker
I have taken Bentyl(Dicyclomine) for decades for IBS, GERD, bile duct problems, autoimmune colitis and celiac artery stenosis. Definitely my go to drug.
It is anticholinergic and I get dry mouth.
I think you got good recommendations- pelvic floor strengthening is very important in helping you hold it in until you reach a toilet.
On and off I also have same problem, mostly if I have a recurrence of the colitis.
Therefore, I always have to know where the toilets are when I’m out. I also often wear an incontinence pad.
You can also try taking Imodium before leaving home.