hugegrowth, do you have disc/vertebrae problems, or is it muscular? i've had muscular problems from sitting (mainly thoracic spine), and found that a good stretching regime helped a lot.
This is paramount to determine before any treatment regime. Is it disc, spinal column, nerve, bone? All are treated differently and need different specialties.
I am in the medical field, hx of broken back, bone fused numerous years ago, aging issues, chronic back pain, and sciatic nerve which radiate down left leg to foot. Back problems are not to be taken lightly and need the proper and correct diagnosis. The proper and correct diagnosis is critical to identify the source of the problem. Once the source is identified, then the treatment plan needs to match.
Changing and alternating positions and quality of shoes helps when standing and walking, along with some medication. Posture is important. Even at times standing up while working on computer which may require a tall stool to prop on. Losing weight, situps (stomach muscles compensate for weaker back muscles).
Acupuncture has its merits, my wife has used this in the past, TENS unit (the electrical current for stimulating nerves) helps but is not long term solution.
Determine the problem, seek proper medical advice and specialists, and follow a treatment plan.