I lost mine at 31 weeks with my first. Had him exactly in my due date.
Labor could be soon or not really depends on the person when I lost mine my water broke 5 hours after, but some people can go another month without it
Not necessarily I lost mine a month before labor. Losing mucus plug isn't always a sign of labor. But if your concerned or having any other signs of labor then I would either call or go in to l&d.
You should go into labor soon. Look out for contractions or anything that seems different some people do not notice contractions.
Just that your body is preparing it can come out weeks before labor.