Thank you SO much, everyone. I think I'm still in this first stage, where learning as much as I can is both helping me and scaring me at the same time. It's only been a few months for me now, so I'm hoping that things will change with time, that my anxiety will slowly go away. I've been looking around and have myself on some waiting lists to speak with a counsellor face to face about all this stuff going on in my head, too. (The one I have now is short term and over the phone only. I do better face to face.) I'm also going to look into the local support group. I'm not sure how often it meets, but I know my rheumatologist gave me some information on it.
Again, thank you everyone. For your words, for your support. It means a lot.