I took it with an anti-b for 6 months [for a UTI] to no effect ages ago. ONE 5 day course of penicillin clone knocked it out after that torture. IF you do not take lots of Anti-b's, or often, it should not be a problem. Discuss this w/your docs... Also, it would depend on what, if anything the cultures reveal. They are key to helping knock out the irritating buggers. LizaJane has advised you well in this quarter.
I don't know about where you live? But my local 'Vitamin Shoppe' not only has the supplements, but a lending-info library of various supplement publications. Where I go I've got an ex-nurse who has a post-grad degree in biology who has spent more time on me, for free, than my docs do? This person has been 95% on target on every single issue! It's worth a try, no?
Hope you feel better and soon! This kind of thing is NOT fun - so I hope you find the best solutions and soon. - j