<s>[INST] I have been having lower back pain ever since I fell a year ago. Sometimes my legs go numb an its been hurting more and more. So bad I don't want to walk sometimes. I have all these lumps in my lower back too an sometimes feels like my spine is going to snap into. I was massaging my tailbone an notice a small hard knot too. [/INST] Hi...it could be due to injury to your spinal cord when you had felled...that is causing nerve compression and all the pain and numbness... better get a ct scan or nri of your spine and show to an orthopedic...Dr. Ashish Verma </s>