I think you have significant back pain
. From your history it looks like you have unstable spine and you are a surgical candidate. This problems can be cured completely with surgical management. Daily dependence on pain medications is not advisable and it has adverse effects. Do you have Lateral flexion and extension xray? MRI? need to see that. You will be back to your work in 2-3 weeks after surgery. Also this is not only about pain, I think you started developing neurogenic symptoms and signs and in that case timely interventions gives the better prognosis. If you can send you xray and mri images I will be able to tell you more about type of surgery you need. hope this helps you.