You really need to see an osteopath or a specialist from that field, also you should be doing some kind of exercise to strenghten your muscles, WFP doe not take much strength so you will not build up muscle by working like you do in some jobs, even trad is more strenious.
I cycle about 60-70 miles a week and because of this i like to visit a osteopath every 6 weeks min, she keeps my muscles from knotting up and creating any major issues. i am in medicash so all of this treatment is re-imbursable.
If you ignore back pain it will not go away, what you will find is that you will be laid up for a long time and maybe do ir-reversible damage