Hello, Have u met any accident or fell down before?It seems to me there is nerve compression over lumbar region or sciatica pain.in sciatica,the pain with low back refferred to lower limb with foot ankle and thigh and sometimes along with numbness and tingling sensating whole lower limb due to nerve compression.there are many other causes of nerve compression or tingling sensation as lumbar stenosis,fracture,lumbar radiculopathy,herniated disc,diabetes,nerve root injury. Usually, the non surgical treatment for the lumbar radiculopathy or sciatica are physical therapy,massage,accupunture,medicines and some spinal injections. You can take hot/cold therapy,apply ice packs or hot water fomentation either therapy is convenient for you for 20 mins. Take massage therapy. Take medicines as ibuprofen or naproxen which reduces the pain with spasm. Avoid long sitting or standing,avoid forward bending or heavy weight lifting these can aggregate the pain. Although you don t get the relief get MRI or X ray.