I definately had less pimples during pregnancy as well.

As far as sensitivity goes, I bleached my hair early in my pregnancy, and it was a lot harsher on my scalp than it ever used to be, my scalp was quite red for days afterwards, and my eyes were stingy too.

Another strange (and very annoying) problem was that my hair refused to hold any dye. I got to the stage of using a permanent hairdye every 3 weeks because after one wash about 90% of the colour would come out, so instead of dark red/brown, I has washed out orange hair for most of my pregnancy! LOL