M.S.
GO FOR IT!!! Remember, contractions only last for a minute, then you get a break for a while. You can put up with a lot for just one minute. Take it one contraction at a time. The most intense time is transition and crowning, which is also the closest to meeting your baby! But they don't last forever, and they are near the end.
I've done it both ways with waters broken and intact: it's much easier to labor without broken waters. breaking the waters makes things speed up, sort of, but I recommend saying no if the doc offers to do it--let it happen naturally. The water cushions the baby's head so it doesn't hurt as much.
One more thing: I read that your brain produces either stress hormones or endorphins, based on what you are thinking about. Remember that. It actually hurts more if you are more worried/stressed. (it's the fight or flight response.) So the more you welcome contractions and try to relax, the more endorphins you'll be able to produce to help with the pain.
It's SOOOOO nice to go right home and sleep in your own bed!!!!!!!