I wonder if she knows yet.... maybe you could do that thing that doctors do. They call in and make someone have a blood test because they're only blinking with one eye and that's a sign of a really obscure form of cancer.

"Hi, it's Bev, can you just let Amanda know she's pregnant and to take a test... thanks".

Also, how quick is it? Can you do it from the moment of conception or is it at the 12 week stage?