I've had 3 children so far and with every single one, I've gotten:
Well, you're probably due any day now aren't you?
And that question always starts for me at about 6-7 months. Then I hear it for the following 3 months. They all get floored when I tell them how much longer I have.
With my first, I was induced 2 weeks after my due date and I always had fun with answering the question: When are you due? -"2 days ago" "last week" "Oh, we already passed the 9 months, so we're going for twins"...
I'm not a large person, but I have very LARGE babies and have so much fluid in me, I get a huge belly. But, some people can be really stupid when they talk to a pregnant lady.
I also get the - You trying for a girl next? I have 3 boys. I'm just going for a healthy baby regardless of boy or girl.