Hi, I'v been having a dull pain in my lower back for a few months now. Im nearly 90% sure it used to always be on my left side(could be wrong about that bit I'v just got so used to it I don't take notice of where it is anymore) and it would sometimes hurt my left buttock but only around the top area of it. Very rarely I would feel a pain travel down my leg and with having the back pain a few months I would say the pain travelling down my leg happened ten times at most so I don't think it would be sciatica. It doesn't really make the pain worse to twist or bend (unless it gets worse than the dull ache) but throughout the day from walking, sitting or standing it tends to get worse. The dull pain is almost constantly there but in the last week the pain is more on my right side of my back if not on my left side too. I have made an appointment with a doctor in a weeks time but would like to have a few ideas of what the cause could be before hand. Could this be because of my kidneys or would it be a back problem?