I went to er with uti, dr said it was the onset of one.and had very little wbc and hardly bacteria.whys my kidney area hurt so bad then? no stones

Kidneys or backpain?: Your kidney area or back may be hurting due to musculoskeletal pain (pulling a muscle at the gym or doing something out of the ordinary) is common. Kidneystones happen and are very painful. If no fever, painful urination or urgency/frequency, try some ice, Ibuprofen and if no relief see your doc. Also drink lots of water; it helps get bacteria out. Void after intercourse, wipe front to back!