"Have you had that baby yet?"

I swear, if I have one more person ask me this I am going to freakin blow up!! It's just so inconsiderate!! Like I'm not already anxious enough. I just don't understand why people find it necessary to say. Anybody else feeling this way or am I just being bratty? What can I say without sounding like a complete bitch? Because what I say in my head is not nice at all.