So sweet! There is a huge variation! Wow! I'm there la mamita....no bump. It'll be a while until I have a belly pic I'm sure. This was me, last pregnancy at 16 weeks with twins. I'm the one usually wearing my own jeans to the 20w scan.
la mamita--are you tall? retroverted uterus? That's always what I've attributed my late blooming belly to, but I dunno if it's true or not!