Hi there! I understand the breaking through, and the sense of freedom it gives.
I would do research and see if there are any local pain support groups. You might not wish to join it, but the people who lead it are the ones to contact for resources for medication etc. The people in the group can tell you what doctors are worth seeing, too.
No, no ER, I agree. Hopefully you won't go into a pain flare that requires that. Do you have an urgent care center nearby? They might have a referral for you to a pain doctor.
I'd also look and see if there is a psychologist who specializes in pain management. I couldn't -- I wouldn't be alive without mine.