You should consult a physiotherapist.. Its because of the muscle weakness that leads to pain during exertions and activities.
Next Steps
Go to a physiotherapist.. Ultrasonic therapy +IFT +Heating therapy +some strengthening exercises will be helpful for sure.
Health Tips
At home.. Rest +hot water fomentation +pain killer gel +no long sitting /standing /walking /travelling +no cold exposure +no manual exertions +no stair climbing +correct posture (sit tall).