dont worry , hun. it depends on your body shape as well. there are girls in my yoga class due at the same time but different sizes. I'm short, 158cm and have a short torso too, so I am sticking out. And ppl say 'oh you've really popped' D'uh, of cos! baby needs space somewhere! I;m 28 weeks and ppl are also saying that I'm going to get really big. But my ob isnt worried so I don't care. (except I'm waddling more and more!)
If you and bub are healthy, and your doctor's cool, that's fine.
Everyone has something to say all the time.