Not sure what your med insurance situation is, or
how that figures in to things, but
it sounds like you need to find a new GP. As suggested above, talking to a health professional really should be the very first thing you do, for both the pain management issue and how to approach detox safely.
The people on this forum can't give medical advice, only suggestions, general information and support. Sarah is very knowledgeable and has helped many who've come here looking for answers.