As an add-on to Kaitlin’s great advice, have a look at how you sit in a chair and whilst driving a car (over time). As an Osteopath I see a lot of what reverts an unbalanced pelvis to be habitual in our sitting posture. For example, take note of how your posterior superior iliac spines (PSIS – or bony posterior hip bits) fit into the back of a chair – are they both contacting the back of the chair? Are they still both contacting after 5 mins? This can be common if you drive an automatic car as the accelerator leg goes towards the pedal and the left gets lazy.
If there is a change over time it should give you a better idea of the shortened tissues vs the long weak one. Good luck!