Thanks for writing in.
The pain in the back and numbness
in the leg is not related to diverticulitis
. It seems like a nerve compression by a displaced intervertebral disc
or another structure. I would suggest you see a general physician as soon as possible who can examine you and refer you to an orthopaedician if required.
Till then, please avoid forward bending and lifting heavy weights. Use a hard mattress and maintain a proper posture throughout.
Hope this helps