Well firstly, Congratulations on your wonderful news! I wish you a happy and healthy 9 months!

Onto the big issue. Its damn rude and I was so far over it by Haz that I learnt to preface the disclosure of my pregnancy with everyone with "I have some wonderful news" so that there could be absolutely no confusion that this baby is very much wanted a loved. Sadly it didnt get rid of the television comments but you make fun of people who say them and they soon stop talking to you about contraceptives! Joke back with them about how your relationship hasnt moved into the old couple falling asleep in front of the TV stage yet. I remember DH got to the point that with the blokes he worked with he would just tell them 'You're just jealous coz I am actually getting some'.

They are making a joke at your expense, makes them fair game imo!

That said, I have been on the other side of this equation where I have congratulated someone who was not exactly excited by the news, so that was awkward, but he couldnt be happier with his now two little munchkins so I don't regret assuming and offering what support i could.