Thanks for reaching out. I'm sorry about your relationship with your mom. I know how you feel! Thankfully, I have an amazing chosen family (my wife, kids, in-laws, select friends) who are amazing support to me. My mother-in-law was worried that the doctor was giving me the diagnosis because he didn't know what it actually is, but when I reassured her, she's here for me.
This forum has helped immensely, too! I have pretty bad anxiety, as well, which means I limit my trips out of the house to visiting family, doctor's appointments, and things for the kids. I don't think I could do an in-person support group or something like that, so I'm so thankful to be able to reach out to people who are experiencing the same or similar things to me!