Hello, according to your description, consider the possibility of lumbar disc herniation compressing nerves and causing numbness in the legs. It is suggested to have a magnetic resonance examination of lumbar intervertebral disc, rest more at ordinary times, sleep on a hard bed, avoid bending fatigue and strengthen the functional exercise of low back muscles. For severe pain, you can use some drugs that dredge meridians and nourish nerves. The doctor you mentioned is handed down from home and belongs to the master. Some relatives have been there, and the feedback is not bad!