Thanks for your advice, Bobbi and Shelley.

I will see if I can ask them about having a copy of my pelvis and lower back MRI with the reports. I will also ask them for a copy of my x-ray of my lower back and the report on that as it may be useful if I wanted to see different doctors for second opinions

Another question I have and this one worries me a bit is when I asked the PT if he had the x-ray that they had took of my back, he said they hadn't given it to him to look at. This seems strange for a hospital. How could he not have the x-ray of my back if this was what he was, in theory supposed to be looking at? He should have had access to it as a PT unless they were trying to hide something maybe? I'm not sure and am worried.