It can be sue due to pyriformis syndrome or nerve compression due to disc bulge. Consult a physiotherapist for proper assessment, diagnosis and treatment. .
Next Steps
Go to a physiotherapist.. Ultrasonic therapy +IFT +Heating therapy +some strengthening as well as stretching exercises will be helpful for sure.
Health Tips
At home.. Rest +hot water fomentation +pain killer gel +no long sitting /standing /travelling /driving /walking /table work +no cold exposure +no manual exertions +no weight lifting +no jerks +no forward bending +correct posture (sit tall)