Hi T.,
9 weeks - yahoo! almost there :)
I have 4 babies... 12, 10, 1.5, and 4 mo. :) I would describe braxton hicks contractions as a tightening of the muscles, like during a cough or a crunch, only it happened all on it's own. I couldn't necessarily 'feel' them (as a pain) but if i touched my stomach during one, it was clearly harder. depending one how the baby was lying, the shape of my stomach was odd too. I was one of those pregnant women who subconsciously touched her stomach ALL THE TIME, so I typically felt them that way.
This is a difficult thing to describe... it's almost like trying to describe what it feels like to have a baby moving inside you, to somebody who has never felt it :)
remember to drink lots of fluids and stay hydrated... so important in the home stretch especially (my first labor was very long and unproductive because of dehydration of the muscles).
Good luck to you! I hope everything goes beautiful and smoothly. Happy Mommy's Day :)