Hi all, im undiagnosed still, am just wondering if any of you suffer with bad bad back pain and what is the cause of this, i am getting pain in my tummy and it feels like it is going through to my back, its my lower back and feels like its at the back of my sacrum, it goes through my buttocks and down my thigh its been getting worse and worse i thought it was associated with my tummy but im begining to think i may have something wrong with it on top of my tummy troubles.