I've observed with amusement the variety of responses we've received from friends and acquaintances, regarding our pregnancy announcement. And so I give you a classification system:
The Presumptive (Type I):
Before we've even taken any pregnancy tests, certain peoples were already asking, "So, are you pregnant yet?"
When told that we have news, "Susan must be pregnant."
"I heard from someone. . . *pauses with questioning/unbelieving look* . . . that. . . you're pregnant?"
"So. . . were you and Adrian hoping to start a family this soon?"
The Presumptive (Type II):
"So I bet you weren't expecting to be pregnant this soon, were you?" *wink*
"I wanted to let you know that I've never regretted any of my children. . . "