I put on about 30kg while pregnant, I was a little overweight to begin with.
Most of that I am sure was fluid, as I blew up like a whale and seemed to lose most of it within a week or 2 of having DS.

I also didnt have my license then, so walked everywhere, plus breastfeeding, I got down to 5kg less then pre preg weight by about 3 months.

My body has changed enormously, my tummy is unrecognisable as mine, it looks like elephant skin, all saggy and baggy, plus the c section scar with the resulting little overhang, my waist has all but disa ppeared, my boobs are a good 2 sizes bigger (went from a C/D to DD and now an E!!) but my arms and legs and face are thinner.
And the stretchmarks!! lets just say I have them all the way to my ankles( thanks to all that swelling!)

like someone else said though, these marks and changes are our "battlescars" wear them with pride, its not easy being pregnat and bringing a little person into the world, but we did it, and I would do it all again.