Hey Princess and Mollie! I feel exactly the same way...apart from family, close friends and my boss, I haven't told anyone else and do not feel the urge to either!
I don't think it's properly sunk in that I am actually going to be a mum (this is my first)!
Furthermore, I have had bleeding since my dating scan at 12w+4. Been since diagnosed with a haematoma but apparently, according to ultrasound scans, my little one is swimming away just fine and heartbeat was audible at 14w+3. So although I am keeping my spirits up and staying positive, I'm not in a hurry to announce my pregnancy. I guess maybe there is a hint of worry.
But all shall be well, I will believe and have faith!! :-)