Hidden bump?

As
I'll be 12 weeks tomorrow and noticed my bump today for the first time! I'm still wearing my regular clothes so I didn't expect it and wasn't watching for it - but I realized when I'm acting normal, my stomach stays somewhat flat but if I relax my stomach muscles, I look pregnant! This happen to anyone else? I wonder when the bump goes from being elusive to permanent. So exciting to see the bump- feels more real!