Hello pmm,
Keep us posted on those lab results. Was the injection a cortisone shot? One injection can relieve your pain for a long time by calming down the inflammation and giving your hip a chance to get back on track. With that and the pain meds, you might not need to get any scans for quite awhile.
I had a knee flare recently that was giving me fits. The xray was negative and so I got the injection. Immediate relief and pretty quickly back to my zumba.
If only my shoulder tear was that easy.