Hi, Thank you for your question. It sounds like slipped disc condition. In slipped disc or disc prolapse conditions symptoms may originate due to nerve root pressure, pressure on the spinal cord and pressure on the tail bone. Common symptoms could be paralysis of muscles, pain radiating to the legs/thigh, numbness, tingling, or weakness. Warning symptoms can include loss of control of the bladder function, paralysis & spasticity of both the legs. If you are suffering continuous weakness and notice reduced strength of muscle bulk in left leg, please arrange an appointment with a neurologist right away. Further referral to a physiotherapist for spinal exercises could be beneficial and may produce relief of symptoms. Hope this helps. Take Care & Stay Healthy!!!