Re: low back ache!
Sounds like you need to see an orthopeadic surgeon to get some xrays, and then possibly MRI if that's incunclusive. Beleive it or not, fallen arches in your foot can also cause lower back pain. Wearing shoes with arch support is always helpful for bad backs.
Good luck, hope it's nothing too serious.
APLIF T4-S1 on july 19, 2004
Harrington rod T5 - T12 1982