Awaiting First appointments with Rheumatologist

Hi! I haven’t been diagnosed yet but my family doctor is sending me to a rheumatologist. I have been having joint pain but no swelling or redness that I have noticed. ESR was 91, CRP was 7 and tested positive for RF, negative ANA.
Had xrays of knees, hips, elbows and shoulders that came back saying “there are minimal degenerative changes at aspect of both SI joints (hips) and “there are mild degenerative changes at the acromioclavicular joint to an extent on both sides (shoulders). Elbow and knees said “no acute pathology identified”. My family doctor told me the xrays came back normal despite what I read on the report re: mild degeneration. I have pain in all four of those joints. Could it be something else???