I had a lower back cortisone injection (epidural) 2 weeks ago.

It has caused pain in my shoulder and neck, and also head tremors. It still hasn't went away. I'm so mad because I almost canceled my appt for it because something just didn't feel right, but the nurse acted like it was no big deal. The only answer they have for me now is to just go to the emergency room. Has anyone else experienced this? And do you think all this will go away? This was supposed to help pain in my back and hip. It didn't help any of it and created even more pain!!