Just an update for all of those who prayed for me:
My tests/biopsies all came back negative. We still aren't sure what is causing my problems, but it doesn't appear to be serious. I don't know why I had such a difficult time coping with this new issue (goodness knows I've been down a similar path many times), but I really appreciate your prayers and kind words. I really needed support, and you all were so responsive. I love this forum and the people on it.
Austen