I'm so sorry you find yourself where you are today. I'd like to share with you what helped me when I felt trapped, and with all due respect I'd also like to share that it is very rare for it to be truly impossible to leave. It may be impossible to leave right now, but it isn't impossible to start planning and preparing for your exit if that's really what you need and want to do.
Having said that, if you want your life to improve in many ways, please give Al-Anon a chance. Try at least six meetings, some different, before making a decision as to continue going or not. Here you go:
How to find a meeting in the US/Canada/Puerto Rico
Take care,
Cyranoak