My left lower back has been swore and annoying pain for a month now. it feels like but also feels swore. i got this after i did some yard work. plus when hunch while sitting somethings i felt it goingup upperback. is this muscle problem or something?

Recommend: Due to persistence, contact your physician and consider an exam. Although this likely represents muscular strain, it may be useful to seek a precise pain generator. Physical therapy can stabilize and direct a stretching and strengthening program.

Back discomfort: Lumbar muscle strain would be the most likely cause of your back discomfort, but I would have expected it to have resolved after a week or so of avoiding further back straining activities. If you experience low back pain radiating down to the buttock and leg, a ruptured intervertebral disc would be likely. I recommend being examined by a physician for diagnosis and advice about testing& treatment