To treat a urinary tract infection (UTI), you need prescription antibiotics like nitrofurantoin or sulfamethoxazole/trimethoprim, which a doctor must prescribe after a quick urine test. For the joint pain, over-the-counter pain relievers like ibuprofen or paracetamol can help reduce inflammation and ease your discomfort. While joint pain is not a typical symptom of a UTI, it can sometimes occur as your body's natural immune response to fighting the infection. Please consult a doctor promptly to get the correct antibiotic and ensure your symptoms are properly evaluated. In the meantime, drink plenty of water to help flush out the system.