Hi! I'm going to pop in here with a little pop psychology.
What is this woman's status re: pregnancy. Is she single, unmarried, no children yet? Is she older and done having her family??
Her comment to me SCREAMS of jealousy. She is clearly trying to make herself feel better by putting you down. My first thought was that she subconsiously wishes she
were pregnant but circumstances are not right for her to be.
I would wait a week and then say something like, "So, does my stomach still look fat to you?
All women carry their babies differently you know, I wonder how you will look (or did look) when you get pregnant?"
I think you look truly beautiful and your belly is great!!