I've had pain in my lower back on the right side for 2 months. At first, my doctor treated it as muscular, but the pain has not gone away & at times has increased in intensity. If I sit for too long or stand for too long, the pain will radiate thru my hip & down my leg feeling at times like it is radiating thru my abdomen area. I've been checked twice for infection by doing urine tests & both times I was told the test was negative. My doctor also had me do a KUB xray to check for kidney stones, but she said that was normal also. Today, she told me to drink more water & drink cranberry juice. I can't see my regular doctor for another week due to full appt times, but I'm worried since I already my kidneys function at about 60% due to some kidney damage from taking ibuprofen everyday for several years. Can you help me? Thank you.