Yep, not uncommon to hear seasoned cops start to describe some pressure-related discomfort involving hip, low back & leg pain after years of having uniform & plainclothes/off-duty belts & holsters constantly pressing against hips, waists and ilium (hip) bones.
Obviously, it's prudent to ask your doctor to check things. Might as well make sure it's not something nasty (bone cancer), or something that's not going to get better (arthritis), but which you can takes measures to help reduce pain.
My doc told me it was just some normal age-related joint degeneration and arthritis, apparently resulting from my "rough & tumble life" when I was younger. (Nice choice of words on her part, I thought.)
Oddly enough, in my case it was on my 'off-side', where I spent many years carrying magazine carriers both off-duty, and for a plainclothes assignment that ran for 13 years. Of course, this was after some years of learning to tolerate a heavy leather gun belt and a growing amount of gear (when gun belts started turning into equipment belts). Talk about sore hips and glute muscles at the end of a long shift.
Great holsters and belts for the off-duty & plainclothes gear, perhaps, but eventually it seems the vertical mag carriers, portable radios, ASP & cuff cases I carried for plainclothes finally took their toll and royally annoyed some nasty trigger points.
One of those quiet moments of commiseration older cops can often quietly agree upon.
One of the reasons I often prefer pocket-holster carry nowadays.