Each pregnancy is different... :-) Doesn't matter if its boys or girls.
I am a few weeks away from delivery of our 4th... I can tell you that with each one I noticed more of those "pains" and sensetivities that you hear about... The ligaments are stretched easier and your body is just plain older than it was with any prior pregnancy...
The depth of your skin and uterus from the outside world really doesn't change... But did they happen to mention or did you notice where the placenta is with this baby? With our oldest the placenta was in the front and I really didn't notice the kicks as much as with the babies with the placenta in the back or sides... etc...
Also the placement of the placenta can make you seem to carry higher or lower or farther out front...
Our oldest is a girl, middle 2 boys, this one is a girl... Ugh... This pregnancy is TOTALLY different than any other... I have been blessed to not have morning sickness or nausea with any of the first 3... No "pregnancy horror stories or complaints really... well except for the stretch marks that turned my belly into a model of a different planet... Really easy deliveries and big healthy babys... (including 10 lber)
With this one I have had nausea since about month 1... Have been in the hospital 2 times because of pain attacks that have now been linked to gall stones that developed during this pregnancy... MOVEMENT like crazy!!! And a pinched nerve from my knee down (random spot for it... lol) Just been really moody and no energy... Totally unlike our other daughter OR sons...
I did find that the type of waist band on my pants helped with the sensetive belly time... The old fashioned up over the belly maternity pants helped give that extra layer of padding...