I Am Prescribed 12mg Of Subutex Daily. I Also Suffer

I am prescribed 12mg of Subutex daily. I also suffer from serious ptsd. I have extreme anxiety but my dr will not prescribe me anything that has helped. Zoloft made me feel the same as I did two montages into taking it. Prozac make my heart have palpitations and make me think very odd thing. There where several thing they've prescribed me. A long with another med that started with a p. I have been doing research and the meds that he has put me on is for more depression. I do have some of that but anxiety is the worst. And with taking Subutex that I need for drug addiction I think he will not prescribe a benzo which was the only thing that helped when I first started have serious anxiety. I took it while I was on Subutex and had no problems with side effects. My question is why do you think he is bit prescribing a benzo at a low dose and if you could help me find a doctor in the Washington, D.C. Area to prescribe both.