You have to consult a Physiotherapist, but by the meanwhile,
You had any change in walking pattern, as you weight bear on one side more?
Or you have any pain while you are turning or changing the position while sleeping or lying on the bed?
Next Steps
If yes, then for time being, just do the following:
1)Just breath in and pull your tummy in, while doing this check your pelvic bone moves up and breath out and push your pelvis down.
2)Take your knee towards your chest hold for 5 counts while the other knee willl be straight down on the bed, do 2-3 repititions on each side
Health Tips
consult a Physiotherapist