big/small double standard

Ok you know what? This needs to be talked about. I'm 6 months pregnant with my third child and I have been told by everyone "you're so small" "you're so tiny" "you better eat more" "is the baby big enough" etc etc. both my children have been over 8lbs and this one is right on track thus far!!!!
Now goodness forbid if someone makes that type of comment towards a big pregnant woman then it's deemed "fat shaming" etc. not everyone gets huge while pregnant, it's all good!!!! 
This is a double standard.
Update:::for the record I would never comment on a friends weight!! I'm posting because there certainly is a double standard. You don't have to comment on the post