That used to drive me nuts too! My answer was simply, 'no, just fat, but thanks for rubbing it in!'
Now I am pregnant & half way through, I only have some days when I actually look pregnant...people are starting to wonder if I am! That drives me just as nuts, lol!!

I actually said the fat thing not so long ago....turns out I was! But it wasn't the belly she noticed. Apparently I was glowing...I actually told her to kiss my bum! No way in heck was I pregnant.......lol