Good luck with your doctors appointment!
One on one therapy can feel like it takes for ever to get started, simply because it can take a long time to feel comfortable with a T. I think if you stick with both group and one on one for a bit, you might start to feel it helping. Also, keep in mind that's it much easier to stay depressed than it is to feel better. Even though it's painful, it's known and change can be scary no matter how much we want it.... I just started group therapy myself, so I understand feeling anxious in that setting...
I do believe there is a girl out there for you. I don't know if it helps to hear that or not...
Good luck, let us know how your appointment goes!

Take care!