All I can say, Hope, is that I can relate, I think, very much to what you are going through. I went through a long period of time with a group, and with a therapist I had a dicey relationship with, when I would suffer through the weeks between our meetings (because we met once weekly), worrying and worrying about something I had done, but there was absolutely nothing I could do about it until the next week. And even then I wasn't sure if I'd get a chance to talk in the group. There were other people with other issues. I would think, oh, if I could only talk about this again, deal with this again, everything would be all right. But often it wasn't. Often the next meeting would just make it worse.
Looking back on this, and it was decades ago, I believe that part of the tremendous anxiety I had about everything that happened was that it was a very poor match between the group therapist and myself. I just didn't realize it then.
My best wishes to you.