OMG, I would have done the same thing, gone to the urgent care and said "call my PM doctor."
I wonder if your PM doctor or nurse called ahead to the ER and told them you would be coming in....you can still go to the ER if your are still in pain. I would tell them exactly what you did and why.
Just curious, what muscle relaxant did they give you? I, too, have been having cramps that and I am hoping to try a muscle relaxant in addition to my other medicines to try to cut down on the BT meds I use and hopefully not have to up the medicine in my patch. So, what is it, and let me know if it works for your cramps!!
cervical fusion 2006, with great result
L4-5 surgery with cages, plates, and screws in 2005, I have continued pain
MEDS: Fentanyl patch, Norco, Celexa, and trazodone
Im going to smile like nothing is wrong, act like everything is perfect, and pretend its not hurting me. (quote used with permission from "Tennis").