For the last few days I have been experiencing pain on both sides of my lower back where my kidneys are located. If I am sitting or laying down the pain seems to ease up. However, when I walked my five year old to school this morning (it is only a couple of blocks away), I had to stop three times for several minutes until I could bear the pain and continue home. Both sides are painful, but the left is bothering me more the last couple of days. It feels like they are made of stone. I am also having a difficult time sleeping, yet I feel exhausted all of the time. A couple of weeks ago I had a UTI, but it cleared up withing just a couple of days.