You probably have either a bladder infection or a UTI...not uncommon at all. Since I started w/my PN, I'd had two UTI's and anti-b's knocked them out soon enough. Granted, that warrented a visit to a urologist afterward as I'd had the 2 uti's w/in an 18 month period...I'd rather see a urologist than a periodontist any day!
I only KNEW I'd had them as I'd gotten a doozey while very young [comparatively] and ended up in an ER! Good thing my GP du jour was there! The PN and the Stress of the PN is knocking you down overall. Don't let this one EASILY FIXABLE issue get you down further!

Call on Monday, make the call and ask your GP if you should see him/her or go directly to the urologist...that way YOU've documentation that your concerns were serious...IF a urologist could see some signs of true dysfunction, THAT doc would let your GP and neuro KNOW ASAP. Believe me!

Let us know how it's all doing! - j