I have this problem since last 4 yrs, i had been diagnosed many times (x ray, ultrasound), but didnt get anything in the reports. Initially doctor said, it is may be because of urine infection. I took medications but no help. The pain was not much and comes for very short duration. But today morning i faced a severe pain at the same place. What could be the cause. I want to get this treated fully, please guide me.