Have you been asked this? I just think it's a really rude question to ask someone, but maybe I'm being over-sensitive and hormonal 
It was the response from my neighbour when I told her I was pregnant. I also thought it was pretty tactless to ask in front of my step children.
I can understand her curiosity (especially as I also told her DP and I were getting married), but to ask? It's none of her bloody business!