I'm having hip pain on my left side and buttock, it hurts when i move my leg. it started last week a day after i went shopping and now it started a day after shopping again. is it caused by the way i walk or that i normally don't walk that much?

Limb length,rotation: This is possibly due to a limb length difference or a rotated pelvis or hip. When walking or standing this puts a strain on the butt muscles or hip abductors. Can develop or discover this at your age is not uncommon. Someone trained in biomechanics , physical therapist, podiatrist Muscle strengthening is a benefit but not necessarily resolve the problem.