This has happened recently but i have a sharp pain in my lower to mid back. i have tried stretching but it doesn't seem to work. help?

MRI: I would first go for a lumbar mri. You may have a bulging, protruding, or herniated disc causing the lower back pain.

Get more information: Pain in the mid-lower back is very common. Over 90% of people experience some spinal complaint at some point during their lives and it usually improves without needing any specialized interventions in 70% of patients. Common causes include pulled muscle, annular tear of the disk, or facet joint pain. You should be evaluated by a healthcare practitioner to get more info.