Thats great, stick with it. And if the thought of calling your dealer ever so much as crosses your mind, call a friend, a family member, your sponsor (if you have one), the treatment center, hell call an ambulance.
I am sure that you have heard all of this already, I am just speaking from what I have seen with a friend of mine who relapsed on oxy. Sadly, he like many recovering addicts convinced himself that he quit once for a long period of time, he can quit again if he has to; the good old "just one more time". If you ever realize you are having these thoughts, get help right away. Relapse rates are high but not unbeatable, however, once somebody relapses once, it is a near guarantee that they will relapse a second time.
Best of luck to you, check in with your friends and ask that they do the same. And if you haven't already, get tested for needle transmitted disease.