Is it okay for my kidneys/liver to take 1-2 Aleve a day for my chronic back pain?

I was diagnosed with degenerative joint disease in my S.I. joints. In the past, the pain has come and gone, but now I pretty much have some pain, stiffness, and soreness every day. The doc wouldn’t give me anything for the pain, except for a prescription of Flexeril and a combination of arthritis-strength Tylenol and 3 Advil for when the pain is bad.

My body is really weird about NSAIDs (only certain ones work for certain kinds of pain) and the Tylenol and Advil don’t do anything for the back pain, nor does the Flexeril, really, but I have discovered that Aleve helps a lot. Unfortunately, I’ve needed to take 1–2 Aleve pretty much daily for the past week in order to live a normal life without pain.

I say “unfortunately” because I don’t like taking lots of pills or medications, but I don’t know what else to do because I’m suffering without the Aleve and I only like to use the Flexeril when I’m having severe, debilitating pain.

I’m wondering if it’s okay to take 1–2 Aleve a day for a length of time, like a few weeks or more? I’m kind of hoping/waiting for my back to feel better, so that I won’t need it. :(