question: Hi, i had a blood test 18mths ago and my kidney function was at 60%, lately i have been experiencing back pain especially at night where my kidneys are, this keeps me awake. It is there during the day as well. I also get more headaches than usual, this could be stress of not having a job as well. My urine has changed from a straw color to a sometimes dark but not strong color red, but more often than not its a darkish brown tint. I have increased my water intake to almost 2lt a day to see if this would help at all. appears to be little change. It may be nothing but then again it may not