Lower Left Back Pain More Condition_symptoms What Could Be Causing My Lower Left Side Back Pain?

What could be causing my lower left side back pain? - lower left back pain more condition_symptoms

I'm serious, paralyzing the left lower back pain for more than a month. Analgesics do not work, can not bend to do anything without pain, and chest radiograph revealed the thing. I can not sit in my chair at work without pain. I have not done anything to hurt my back. What are some things that are causing my back pain could be prohibitively expensive? Thank you.