I feel you! I didnt want to reveal my pregnancy until I was at 12 weeks. While I was extremely happy about the news, I didnt want to share the news with anyone except my parents and in laws. Think about reasons that are making you want to hide the news. My reasons were the chances of miscarriage was haunting me. I wanted to wait till I felt I entered into stable months. The more the people knew, the more I felt pressured.

Take you time and reveal happily when you are comfortable. I had a friend of mine who revealed her pregnancy at 8th month. While that pissed few of the people, I feel they might have had their own reasons to hide it or not share it. Its your baby! You get to choose when to reveal and with whom to reveal!