I'm 15 weeks and 6 days and I'm sure I felt that little alien in my tummy wriggling around this morning. It's early, but I am thin and pretty sensitive so it's certainly possible.
I was sitting at my desk at work tapping away on the keyboard when I felt butterflies in my tummy, real low down. I stopped typing for a second, but then thought, no it can't be, it's too early. I kept typing but this little butterfly was insistent, the gentle tapping continued for a full minute or two so there was no mistaking it. I started giggling and emailed D straight away. I didn't tell the other girls at work, it felt like a lovely little secret between me and my baby.