I've been a little worried for the opposite reason. I'm almost 13 weeks now and I have nothing at all to show for it. I'm pretty sure that I started showing at 13 weeks with DS, and earlier with DD. The 12 week scan put me at ease when I found out that bub is measuring the right size and the amount of fluid was good. Phew!

One thing I've noticed is that my pelvis is still wider than "normal" since having my DD (she's 8 months), so maybe it never got the chance to slim down after having her and this bub has more space in my actual pelvis and hasn't needed to make a "belly" yet... *shrugs*