You cannot hand deliver the X-rays for three weeks? I wonder if they might allow you to deliver them a bit early so that the rheumy can have a look at them sooner? It seems to me that there should be some way that you can get treatment for your pain without having to wait three weeks.
I know that it must be frustrating to want to know what is wrong, and finally getting an answer that only verifies that something is wrong, when we would much prefer it if nothing were wrong.
I hope that you can find a way to get treatment for the pain while awaiting your appointment. Please let us know if you find that there is something that can be done.
Peace and Blessings
Look For The Good and Praise It!