Hula dancing isn't the only thing hips are good for. Hip joints are the ones that provide the hinge for any kind of forward motion. While they're not as flexible as shoulder joints, they're large joints, and a lot of things can happen in there.
Any chronic pain needs to be addressed by a doctor, but hip pain does not automatically mean you have arthritis. If the pain is coming from the front of the hips, in the groin area, it's probably a sign of some form of arthritis. But if you're experiencing some tenderness along the sides, your pain more likely stems from tendonitis or bursitis, which can be treated in a number of different ways, including anti-inflammatory medication and physical therapy.