i have lower left flank pain...........hhmmmmmmmmmmmmmmmmmmmmmm, now what could that be? i know what it can be but i asked the nurse instructor anyway.......i saw it in ER. KIDNEY STONES......please, please, please keep me and my kidneys in your thoughts, and if you pray, prayers. clinicals start tomorrow and i can hardly walk now due to the pain. this so disappoints and scares me. not the pain, i'm tough, but having to miss clinicals....you can't take them later. you have to REPEAT the class......