Sometimes Blogger just drives me nuts. When I went to check my comments a few minutes ago, I found ALL MY POSTS HAD DISAPPEARED!
I checked out Blogger Help and found that a lot of others had suffered the same fate. Someone suggested that publishing a new post would resolve the situation. So, here goes. Hope this works. :)
Edited to add: it seems to have worked. I can now once again view all my posts. That was a scary few minutes!