Any march mommies still not showing yet?

So I went to visit my boyfriends mother with our son.
She pointed out how I have no bump and called me a B***h because I am tiny.
Now while it was funny how wound up she got over it at the same time it was bugging me. 
She believes since this is not my first pregnancy I should be huge by now. I was tiny with our son.
Please tell me I am not alone in not looking pregnant?