Now, I'm only irritated when it's people that I have never met before in my life or see only occasionally, like the bagger at my grocery store. Friends and relatives can feel free to ask me these questions.
When are you due?
Got a name picked out? What is it?
Are you excited to have another one? (Seriously. I can't imagine why anyone would get into this with a stranger. I do happen to be very excited to welcome another girl into the family, but what if I wasn't? What do people expect with this silly small talk?)