So sorry that you have to deal with this on top of the pain.
Everyone has given you some great info to start and I know it is so overwhelming to just sit down and get on the phone and start calling these places so pace yourself with that maybe if you have someone who can make some of the calls for you and ask the general questions re: do they accept medicaid, if they dont no further contact is even needed.
I want to say here if you can get past the receptionist in your Docs office and get an appointment to go in there sooner then the next scheduled visit and I would say no more then I am having problems with my pain or my meds whatever,she needs to know no more then that to make you a appointment!
In your post earlier in this thread where you say " I cant take this anymore,I want to just end it all but cant, I want to pull my hair out" Go in there and say those things to your Doc,just like that! Let him or her know exactly how this is effecting you. Be as honest as you possibly can and if you have to get upset,mad,weepy whatever it takes to get the message across that this is literally killing you and your life by inches.
I have found that when I go in there and state the truth in the simplest of ways about how I really feel and not sugar coat it or tone it down out of fear of looking like a nut, I can assure you that each of us here have had everyone of those feelings you described at one time or another so you are NOT the odd man out! I have gotten the required actions I was looking for. Better options for my pain with more agressive treatment and the Doc and I have a better understanding of where this relationship is headed or not.
Good luck to you and by the way do you keep a pain journal by any chance? If not you might want to consider starting one today and put everything in it,the topical creams the number of baths you have had to sit in,the times you have slept in a chair,or missed an important event in your life,what helps what doesnt,what makes it worse, things you try on your own,things you try others tell you to, keep it and be as explicit as you can and take it with to every PM appt. you go to.