Thanks everyone for the supportive comments! I had my session with T this morning and she was really wonderful. She told me that, after my session last week, she took the (limited) information I had at the time and called her friend who is a nurse to ask questions about what she thought my results meant. I can't believe she cared enough to call her friend, in her spare time, to ask questions about my test results. It really makes me feel like i have someone who is "on my side." Her nurse friend also told her my test results are most likely a sign of *disease mentioned above* so she came to the same conclusion my doctors are leaning towards. So, in that respect, my T wasn't surprised by the news, but I could tell she felt kind of devastated for me. I could hear it in her voice. She also said, at the end of our session, that she's going on vacation in 2 weeks, which will probably be around the time I get a definitive diagnosis. She told me that, even if she's gone, she wants me to call her and let her know. I told her that really wasn't necessary; I would be fine waiting until she got back. But she insisted; she said she'll be thinking about me and she wants to know as soon as I know. I really appreciate having her in my life. It's so good to feel like I have people around me who care about me, and that I don't have to go through this alone.

(Next step? Telling my partner. It's her birthday tomorrow, so my plan is to hold off until a few days after her birthday. No need to spoil her b-day worrying about something I'm not even certain I have.)