http://www.merck.com/mmhe/sec11/ch149/ch149d.html This was the cause of my being the sickest I have been in my life. After 3 days in hospital. Now on 2 antibotics and pain pills I am just curious if anyone has any ideas for me. The hospital did several test including x-ray and cat scan but found no stones. Is it possible that the stone were undetected? I strongly feel I have kidney stones! Still have a 2 checkups to go to after I finish the antibotics. I have had a kidney infection for almost 9 months now and have been on antibotics 6 times before so I am not hopeful about the outcome of the new antibotics. I get better while taking them but a week after I finish it is right back worse than before. Do I need a MRI to find the stones? My fever ran 103.8 and I thought I was dying worst pain of my life just very scared it will go back there when the antibotics are finished. First check up next week what should I ask my Dr. Any advice accepted!