Taking drugs to get off drugs isnt the answer. I get your fear and desperation. I have no health coverage or any means to rehabilitation or therapy. No access to suboxone or methadone clinics. Ive dont the withdrawal thing so many times that Im skilled to get through it. Whats gotten me through is preparing myself mentally and accepting its gonna happen, and just deal with it. I used to go into full blown panic when my dope was low but realized it only made it worse. The first day is hard, the third day the hardest. After that gets easier and easier.
Seriously though, using the prescriptions to get through is just a cycle. You'll be good after the doc visits but by the end of the month your screwed again. It'll never end that way.
Good luck.