It is starting to feel like the whenever someone sees you are pregnant, after the initial congratulations they go on to tell you how awful/painful/terrifying their labour experience was.
Why do women do this to each other?! 
It doesn't even seem to be just close friends and family. I bought a pregnancy magazine in the gargage last night and the lady behind the counter had to tell me how she had nearly bled to death following her last labour!
It almost seems competitive. When you are in a group and one person starts with the stories, everyone else seems to say theirs was more painful/gruesome etc.
How can this kind of thing be (politely) stopped?