Hi everybody~I have the exact same problem you do. I actually have been dx'd with Fibromyalgia,so, like you, I do have a lot of strange things going on and even being dx'd with FM (my mom & my brother have it, my deceased uncle had it too and when I tell them how I feel, they say "oh yeah, me too"), having assurance from family and members on the FM board that they experience my same symptoms, and being dx'd with anxiety, I STILL have trouble believing it is JUST anxiety. I have been working on this for years - and while that sounds depressing, it isn't really, because I seem to go through spells - if this were constant, I would probably be out of my mind by now.
But, I think you are on the right track with self talk - keep reminding yourself about how if your symptoms were "real" symptoms of a deadly condition, they would be progressing. My "disease of the day" is liver disorder, because my dad is dying from Hep C - I have no symptoms or risk factors for it, but I do get FM pain over my ribs sometimes, and I can spend days and nights worrying about my liver. My husband (kind soul that he is) keeps reminding me of what bad shape my dad is in - that sounds awful, but comparing myself with someone who actually has the disease I fear (today
) makes me realize how silly my worries are.
One book that has really helped me is "hope and help for your nerves" by Dr. Claire Weekes. It discusses how to "stop turning the anxiety screws" on yourself...I have found it very useful. Maybe you want to check it out.
Anyway, hope this helps a little...It helps me to know others are out there feeling like this. Best wishes for a good day, Marirose