Anyway, as the cervix thins and shortens (called effacement, or effacing- an in: the baby is starting to show his face to the birth canal), the mucus plug is released out comes a "small" amount of blood, which is usually pinkish. Sometimes they call this escaping blood, "bloody show," cause it shows you that you should pack your bag if you haven't done do already. Like me... I've been packing like a madwoman ever since it began.
Image source from: http://birthsource.com/
So, maybe around the same time, usually after effacement, the cervix begins to dilate. So once it shortens and thins out and the plug is released, the baby's head has to fit through so it can come down the birth canal. Since I am at 3 cm, I still haven't entered into "active labor," which is when the contractions usually start. You don't start pushing the baby out until you've hit 10 cm, so I've got a while to go. But as the baby wiggles into a comfortable place and exits the cervix, that's where the term "station(s)" comes from.
I'll keep everyone posted!