hey OZ,
we also didn't want them to tell us the sex... but we had them make a prediction and put it in a sealed envelope. At one point there was 1 doctor, 1 nurse and 2 lab techs in the room looking at the monitor (they had turned it away from us so that we couldn't see while they were exploring the nether regions), anyway they all burst out laughing and were saying "ok, mystery over, this one is 100% certain, ha ha ha..." etc etc etc... so we guesed it was a boy. (and presumed an, ehem, spectacularly endowed young man at that
)
After we had our beautiful girl (and had long since stopped obsessing about the envelope up on our mantle shelf) we remembered the envelope, and opened it to find a perfectly clear snapshot, taken from the perspective of "inside the toilet bowl looking up", and I have to say: yup, they were right! this one was 100% easy, no guess-work, girl.
enjoy this time period, both of you (raef and oz) it is fun!