I don't know. But when I was pregnant with dd, I had to go to the hospital and to the dr. a fair ammount. Way more than once, a nurse or security guard would look at me and say, "You're having a girl, aren't you?" I didn't know and said so.
And once after an appt. my dh and I went to a nearby store. I was walking without looking and I ran into a ribbon/streamer thing. I looked up and it was a BIG balloon that said, "IT'S A GIRL!!!!!!!"

I remember thinking, "If this is a girl, this will be a good story."
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