My biggest fear is the steroids might screw with the bodies natural ability to fix the issue. They were happy that I didn't use roids because it gave us a chance to see if my body would fix the issue..and it did.
Don't be shocked to see the lesion you had is gone at the next MRI.
Are you doing rehab? With MS, new or old, non stop PT is the way to get something back and keep it. I ran out of PT last year and I am right where I was last June again.