June 2007, I had a successful one level spinal fusion in my lower back (L4 and L5 I think). A couple days ago, my lower back started started to ache a little more than usual. Last night, I was laying on my side, with my hips twisted, as I moved my back/pelvis, I noticed a squeaky sound and felt some clicking. My husband can hear the squeaking and the pain is uncomfortable today. Just wondering what this could mean?

Thanks