Well, if there is a kidney infection, the urine test should also show the infection.
You can however, so a ultrasound of the kidney and bladder to rule out cystitis or renal stones
which may also cause pain. Another possibility is the bacterial vaginitis, which causes vaginal itching
and burning(esp during urination). Start the probiotic capsules and the vaginal wash. Hopefully you will see some improvement. Do a oral course of clindamycin
to treat any secondary infection. Drink lots of water. Avoid caffeine, sugar and salt.