If it helps, every meeting I went to was full of support. Not a single one did I feel like an outsider as a newcomer.
Every person in the meetings had to do the same at one stage or another. It sucks because it's not in our comfort zone but it's just a mind game.
Go in, make a coffee/tea, let someone know you're new, and let the ride begin. I've never looked back and can't recommend it more highly. By far the best thing I've done just for myself in life.