I'm 38 weeks (give or take), but I don't look nearly big enough to be having a baby in the next few weeks. My doctor says the baby is probably about 6.5lbs and my weight gain is good (26lbs total), but my belly just doesn't look that big. I keep telling myself it's because I'm tall so the baby has more vertical space and doesn't need to stick out as far in front.
Here's a picture from August 31st (it looks like I'm sticking out my belly with my hands, but I'm just holding up my shirt):
And here are 2 from September 7th (heads are chopped off because D likes to be anonymous):