A.
YOu don't. Even if the doctor tells you, it doesn't mean anything. With my first two, the day before I went into labor I had OB appts. (I was late with both). My doc. said I was not dialated, baby has not dropped or anything. Boom, that night I went into labor.......this happened twice. With my third, I was walking around 3 cm dialated for 3 weeks. Delivered 1 day before due date. You just don't know.