Hi SBE,
While I don't have any personal experience with drugs (my DOC is alcohol), I wanted to say hello, welcome, and offer you some great big virtual hugs. Thank you for sharing your story, and I'm sure some others will be able to offer some relevant advice.
I do want to say that I am 99% sure you can go to NA and not have to talk. At AA, you just say that you'd like to just listen today and that's just fine. They won't mind one bit. If you listen for a while, I'm positive that you'll hear stories you can relate to, and sooner or later you'll WANT to share a story of your own. But until then, listening will help you, too. Just being in the company of others who understand what you're going through will be a huge relief. I strongly encourage you to go.
I also strongly encourage you to come back here often. The people are are wonderful, and the support is unending.