I'm on #3 and I get all of those questions! My first two are boys (ages 11 & 7) so I get the "I bet you want a girl" a lot but its worse cause my own mother has 4 grandsons and wants a girl. I hear it from her everyday! Now she has my boys saying they want a girl and asking my constantly " mom, don't you want a girl?" to which I respond"I want a healthy baby". But the worst is the looks and comments about starting over and "did you want this?" to be honest is was a huge surprise but I'd NEVER say it was unwanted or unplanned. To be considered unplanned you have to have a plan, for birth control or something. To be honest I'm surprised we have had #3 sooner cause we have just been on the "what will be will be" route through our marriage.
My oldest was 13 when #4 was born, and there was an 8 year gap between #3 and #4. And now my oldest will be sixteen before this baby comes. Yes, we got a lot of those "starting over" comments, as well as "well, wasn't this a surprise" .... when in fact they were both planned (as were all of them)