For the past 3 weeks, I have been having REALLY bad lower back pain (right side) At first I thought it was just a pulled muscle and it would go away.. but now it has got very worse and it's hard for me to run, and sometimes even walk. It hurts to sit down, and even when I try and stretch it. The pain has now gone into my right hip and down my leg. When urinating, it sometimes burns and hurts. I was wondering what are some possible things this could be? Could it be my appendix? Btw- I have had kidney stones in that side twice and I know its not that because its too low

My sister had to have her appendix removed, but her pain was in the lower right of her stomach. (Right side if your looking down at your stomach) But I don't know about in the back. I would get it checked out by a doctor.