Kidney Trouble, please help?

My girlfriend started having back pain around the right kidney area a couple weeks ago. She went to the doctor right away and they said she had a kidney infection. She was prescribed drugs and sent home. However, the medicine didn't help too much. Today, the doctor's office called her and said that it wasn't a kidney infection and that she needed to see a specialist. I'm getting really worried, what could this be? Any feedback would be great, thanks

[Singingloonie]

Hmmmm. 1. Get to the specialist ASAP. 2. If the pain gets worse, go to the ER because you don't want to screw with your kidneys.

Maybe it's kidney stones? Hard to tell without imaging...

[hawesae]

I was thinking the same thing, it might be kidney stones.
The pain did get better, just not completely. She went from being in constant pain to having it come in waves. And it only really bothers her when she lifts something heavy or does anything else that puts strain on it.