I have been having back pain should i go to the doctor?

Maybe: Start with rest, heat, nsaids, gentle stretching and core strengthening exercises. If the pain has persisted more than several weeks, then yes i think you should see a doctor.

Back pain: The back pain can be caused by muscle strain, spinal stenosis, ruptured disc, nerve impingement ... The treatment depends on the cause of the pain. You should seek help from a pain management doctor. You might benefit from a comprehensive evaluation and treatment.