Sorry I can't answer your question about bladder issues as I can't say that's ever happened to me! But I just wanted to say welcome back from a fellow Ontarian!
And you're in luck! Acacia is gluten free ("has no gluten, sugar, salt, artificial sweeteners, citric acid, or yeast" as it says on the product page). An SFS (soluble fiber supplement) will definitely help with your C and D, and likely help you from swining too - and Acacia works for lots of folks on here. I don't know about it having any effects on your bladder but it's just natural fiber - like in oatmeal - so I'm sure it would not have any negative effects.
Acacia a good choice too if you don't mind having it shipped from the US as there aren't many good SFS's available here in Canada. I use it and I love it