I agree w/ Rhoni. They may want to see what it's going to do, test more, see what sx it's causing.
For me they are still testing, sort of. They are not sure as of yet what is really causing my sx and are very hesitant to blame any of it on the sm.
Complicating it for me are some C spine issues and brain lesions. None of the docs I've seen can agree on anything, lol - isn't that par for the course?