Change in plans for today

Saw my rhemotologist (sorry not that great at spelling) yesterday. She has treated me over the years for carpal and cubital tunnel. In addition, she got me into my 1 appointment with Dr. Schwartzman within months instead of 2 years because they both work for drexel. I wasn't expecting her to do much at this visit. She advised me to not get my injection today into my back cause she worried it would cause a possible spread of RSD and she said we should know for sure that it would be helpful first, so she ordered an MRI that i got also yesterday. She said if something like syattica shows in the MRI then i should reschedule the injection cause it would help that though physical therapy would probably help more, but i can't really do physical therapy due to  my pain from RSD. She also wrote me a prescription for a medicine thats like motrin but you take it once a day instead of 2-4 times a day. I'm going to call my pain doctor today.