Hi Whit,
I think you should contact your uro who performed the surgery with these complaints and valid concerns. If you need an antibiotic for a urinary tract infection, the uro should know (if he doesn't already). The pain and spasms that follow a TUR are similar to those of an infection and can be treated with various medications that help a LOT. They're not the same as pain meds, a different class of drugs, either antispasmodics or anticholergenics (I think). But if you still need pain meds then you need them! And there are things like stool softeners that make life bearable again, you should be on that already.
As some wise person mentioned in your other thread, there are also drugs that treat urgency, if that's what is still keeping you awake at night. If you're not getting sleep your body can't heal, so that's of paramount importance. Being exhausted makes it all worse, and everything is more painful when you're tired.
I hope you get the help you need ASAP.
Wendy