Very GOOD! That you've had no response and now do? That's super, beyond that. I know cause the same things' been happening to me, only a little, but I will take any reflex to no reflex! For me it was the opposite foot [my worst one].
Don't ask about it, just take it as a hopeful sign and keep it that way to help youget thru all the other things happening.
Those things might be related to the spine or not, who knows? Docs can only guess. That your doc is worried about new pain, means that doc is a treasure. So few really care [I've one who does, thank goodness!].

Joe, that site is one good 'keeper'! Good find!

Oh, Roxie! What can I say? Just be glad that it'll be over with soon and fast. That way you don't have as much time to fret about it.
Now, please no one, do this?: Not allowed! Promise? - j