Well hopefully you just flared things up a tad and did not do anything more back there. The spine specialist will better be able to tell you that.
I am a lumbar fusion patient, and I have numbing and tingling that travels all over the place.
Remember.. regardless of where your spine issue is.. the whole kit-n-kaboodle is effected in one way or another. It's a chain.. it's all hooked together. Therefore, it's not uncommon to have some referred pains appear just about anywhere.
Shoot, after the fusion was done.. and for months.. I had what I call a "buzz" type feeling on top of my scalp and then it itched, but it was an itch that I could not relieve. Then it would just go away, come back.. go away again and again. Odd eh? It's obviously the nerves that are the cause.
Hang in there.. and if get any worse or your pain management gets increasingly difficult, i would see if the new doc can speed up your appointment by calling them and explaining everything, or make a trip to the ER.
hang in there.