Good morning,
I am sorry you are in this relationship. It sounds like you have an abuse bond with your fiance and those are very hard to break. The situation you are in is not black and white....there are a number of things that factor into it. The hope I have for you is the fact that you are talking about it. It is only after you lift the curtain of secrecy that you can even begin to consider leaving. I hear you being honest with your T and Pdoc......major first step.
You can start now by finding out about a women's shelter in your area. Perhaps if you have access to any funds, you can begin getting a stash together...it could be as small as $5 bucks a week. That will be your money which will psychologically give you a boost.
You are the only person to decide when you are strong enough to leave. We may have opinions, but you are living the reality. If you start making plans now, you can develop a plan to leave. The planning in and of itself will benefit you in several ways. First, it will give you you a sense of purpose. If you are making a plan, you don't have as much time to obsess over your situation. As you work on your plan, you are going to discover emotional and psychological strengths you didn't know you had. Resiliency matures as you make your plan and look to the future.
Regards,
Sabra