I think it just sets us up for disappointment most of the time. Other things can trigger
contractions besides actual labor like dehydration, stress, over doing it, under doing it...
So, it can be really hard to know when the real deal is happening. My midwife gave me some good advice. When you start getting contractions do a few things to see if they continue before calling the hospital or birth center. Drink two glasses of water, If you have been sitting for a while...go for a walk.