I'm feeling the same so far with number three, have two beautiful girls already. We don't mind what we have, another surprise 
Just wondered, as I feel more tired but that could be the two girls I have both being under three!
I also feel I'm carrying lower but once again I think this is due to previous babies as I carried all front so my muscles split and I now have a hernia in my belly button. So that's the only differences..
I just believe the way you carry is just unique to you, I don't think it determines what you're having? Do you?
Lots of people keep saying oh you're lower, smaller or whatever but I just think it's down to how I carry in general!