This pain may be due to nerve root compression involving the left side.. It may be due to local inflammation around nerve root or disc prolapse at the level of spinal cord..
Next Steps
You should take complete bed rest for now. Start with analgesic with muscle relaxant tablet, take
calcium,
vitamin b12and
vitamin d supplement, apply analgesic ointment locally. Also you can start with Physiotherapy. If not relieved, you may require MRI Lumbar Spine
Health Tips
Avoid heavy work, avoid sitting down, avoid Indian toilet, avoid forward bending, avoid stair climbing and descending..