RA is usually insidious, with the predominant symptoms being pain, stiffness, and swelling of many joints. Morning stiffness is a common feature of those with active RA; it has been defined as the following: "slowness or difficulty moving the joints when getting out of bed or after staying in one position too long, which involves both sides of the body and gets better with movement".
So the description may fit RA, but doesn't have a characterisic story. I would first fully evaluate the right hip. Possible causes include arthiritis, sciatica or bursitis. An orthopedic evaluation and hip MRI would be a comprehensive evaluation to consider.
To test for RA, I would suggest testing for rheuamtoid factor and an ANA (anti-nuclear antibody) level which would be a start to screen for a rheumatological etiology.
Followup with your personal physician is essential.
This answer is not intended as and does not substitute for medical advice - the information presented is for patient education only. Please see your personal physician for further evaluation of your individual case.
Thanks,
Kevin, M.D.
Bibliography:
Venables. Clinical features of rheumatoid arthritis. UptoDate, 2004.