unwanted pregnancy advice!!!!

Mommy
Is it just me or when you become pregnant do people start coming out of the woodwork and become experts on YOUR pregnancy, birth plan and baby. I understand friendly sugggestions etc. 
Let me start by saying I am 32 years old and my husband and I are expecting our third little boy together! Our older ones are a teenager and preteen and we've done pretty darn well thus far if I do say so! Yes, I was young when I had my older ones but we raised them NOT our parents. 
I have been asked "what about your white couch?" What on earth will you do about your white leather couch?
"You're not really going to have a third csection, are you??"
Hum, hello....my big boys were once little boys. 
How do YOU respond? This has not started bothering me until recently. Especially, from neighbors...
Vent of the day with a dash of pregnancy hormones