Bladder control and Botox injections?!

Evening all I am hoping some of you can give me some personal feedback as far as having Botox injections into my bladder? I have been experiencing bladder weakness for a while now and have been seeing a bladder specialist about it, I’ve tried a couple different types of tablets different strengths but they don’t seem to be helping, so my specialist has asked me to have a think about Botox injections! Has anyone had them, and how did you find the experience? Did they help, did you experience many side effects? Thank you in advance Liana