May the Lord God touch you in the name of Jesus and give you the healing you need.
I pray that you get rest from this condition....make sure you connect to a support group and get appropriate medication if you can....it helps.
I'm sorry you are going through this. It must be real difficult. I know I had a heck of a time with anxiety and I still do get some anxiety every once in a while when I feel like I am not in control of things. Where I find solace is, I've realized that I do not have to be in control of everything. I can't control other people, but I can be in complete control of how I act or react.
I don't want to sound like a jerk when I say this, but I feel the need to address your using suboxone. You mentioned that it is the only thing that keeps you clean..... If you're using, you're not clean so perhaps the anxiety revolves around the suboxone use? If that is the case, it is addressable.... it will take a lot of work, but it is doable. In fact, all of it is doable and it sounds like you have a good support in your husband.
Keep posting here, and at lease you will have a bit of company in your own home. My problem is the opposite with anxiety, I hate staying in by myself. I am old, live alone, but am still active. Anxiety difficult to deal with.