Sometimes my left lower back and left neck side hurt after sitting. but it doesnt hurt when i walk or do exercise? no pain during activity and it doesnt radiate to other places either and no pain even if i bend down?

I have seen many people with spinal pain. I can't tell you how important an in-person examination is needed to help you. More details are needed; the information about the accident and nature of the pain physically and subjectively. Back pain can come from bones, joints, ligaments, discs. The back pain can also include the mid-back pain from the lung, GI, or heart