I have hip pain, typically in the morning.  what is the best manner to start investigation/treatment?

Doctor can evaluate. The type and location of pain is helpful to a doctor evaluating a person's hip pain. Increased pain with or after movement (especially weight-bearing activity), and improvement after rest, suggests a structural joint problem such as osteoarthritis. By comparison, constant hip pain, especially pain at night, suggests infection, inflammation, or cancer. Orthopedic and rheumatologic doctors can help.