I know you are more than ready to get some answers. We all know that living with chronic, long term pain is horrible, but it seems it would be even more horrible when you are in pain and don't know why, or exactly what is causing it. It's kind of hard to cope and come to grips with something that you can't even put a "name" on.
Please do let us know how it turns out. I guess it'll take a couple of days before they call you in with the results? Best wishes, and fingers crossed that they will have some d*****itive answers for you.