I had a lovely condition called symphis pubis dysfunction. Basically the ligaments in my pelvis got too loose during pregnancy and caused all kinds of instability. It hurt to walk, and if I stood too long with my weight on one leg, I’d get “stuck” where it felt like my hip needed to pop but couldn’t. It took lots of physical therapy, but it’s fixed now and some pre-existing hip weirdness hasn’t come back either. I’m thankful.