Apart from the advice that you have taken from a number of contributors on your case discussion, let me add further. Please, also start a course of endurance training like using the stationary bicycling to do the aerobic exercise will increase your stamina and will do your cardiovasular conditioning improving the performance of your musculoskeletal system. That helps a lot in chronic pain states. For bladder problems, if there is any muscles weakness, it is better to strengthen the pelvic floor muscles. You must do the execises for pelvic floor muscles. Please, consult a urologist if the bladder and bowl problems worsen. In addition, you must try the spinal traction procedures and they have certain efficacy regarding pain and root compression symptoms. Let me tell you the detail of spinal traction as under so that you may get these session from your local clinician or physiotherapist there. Have a look on the over view upon the spinal traction procedures.
Spinal traction has effects of mechanical elongation of spine, Wikipedia reference-linkfacet joint mobilization, promoting muscle relaxation, reduction of pain. Spinal traction is indicated for spinal nerve root impingement, hypomobility of joints from dysfunction or degenerative changes, joint pain from symptomatic facet joints, muscle spasm or guarding, meniscoid blocking, discogenic pain, post compression fracture.
Continuous or prolonged traction is an effective mode of therapy. In it a static traction force is applied for several hours to several days usually in bed. Only small amount of weight is tolerable.
The effective force is influenced by the body position, weight of the part, friction of the treatment table, method of traction used and the equipment itself. Generally for vertebral separation:

In lumbar spine a minimum friction free force of half the body weight is necessary for mechanical separation. Some authorities suggest that 1/3 of the body weight should be used for lumbar traction. While some suggests that 60 percent of the body weight should be used for lumbar traction. Generally lumbar traction should be applied in range of 18 to 45KG. To avoid treatment soreness, the first treatment should not exceed half the patient weight. Progression of dosage at succeeding treatment will depend upon the goals and patient’s reaction.

There are controversies that exist between different literatures regarding the dosage applied for the spinal traction. Opinions vary among different authorities.

Have a look over a very useful article on Lumbar Traction.

http://www.thesaundersgroup.com/lumbar.pdf

I think that it will be of help to you. Please feel free to discuss more ideas or views in this regard.