As per the physician's advice first you have to rule out wheather you have systemic problem with your pyrolic endoscopy.
For your back pain , I would like to know whether the pain is continuous or intermittent, upper to lower back pain either on your muscles or spine, how long you have this pain, which activity increases your pain, which activity decreases your pain?
Next Steps
You can give hot water fomentation and can use Volini spray or gel on your back. Ensure that you are not allergic. You can do slow walking for 15min twice a day.
Health Tips
If the pain persists then you need to consult a Physician or Physiotherapist for further evaluation and treatment.