Do other people really get you down? I feel like a bit of a rant so I hope you don't mind!
We've been married just over two years and it seems like everyone expected us to have kids straight away. Secretly we've been trying for about 18 months and the only person that knows is my best pal and now MN!
It's really insensitive when people start to quiz you but then I think I could be bringing it on myself for not telling anyone! Sadly I've now taken to avoiding conversations and some of my colleagues at lunch. I'm becoming a recluse!
One of the guys I work with got married recently and I walked in on a conversation today about him and I having a race about who would be first to conceive! Fortunately he saw me coming through the door and said "I wouldn't come in here just now you might get embarrassed!" Try absolutely fuming and ready to blow! 
Rant over..... Ah! That feels much better.... Maybe I'm overly sensitive just now!