For better results need proper assessment done by doctor after proper diagnosis treatment protocol will be helpful for you. there can be different issues like nerve compression.muscle strain due to poor posture, muscle tightness.so better'you do proper diagnosis then we will guide for same.but for now pain relief use ice pack or hot bag for 10-15min three times a day.or use pain'relieving gel or ointment like volini gel.
Next Steps
start doing exercises for back like back strengthening exercises, knee strengthening exercises.
also start with streching back Stretching,side stretch, hamstring stretch,TA sterches will help you.
try to check your posture do you need any ergonomic changes advice.
avoid forward bending
avoid lifting heavy weight
avoid prolonged sitting during work try to take breaks inbetween your work.
try to walk daily for 10-15min.
Health Tips
use online consultation with physiotherapist doctor for better treatment advice.