helllo sir, back pain are mostly present either due to improper posture/weakness of the back muscles or sedentary lifestyle. Analyzing and understanding your problem is manadatory to relieve tha main cause which is PAIN. Stretching,strengthening and posture training will cure the symptom.
Next Steps
avoid lifting heavy objects and bending. Application of hot water and coled water bag in alternate ways for 5 mins each will help you with pain relief.
Health Tips
drinking water helps to recover every body injury and pain. so START DRINKING WATER.