Is the mucus plug white thick discharge?

Bloody show: The mucus plug is made up of thick cervical mucus that your body forms as soon as you're pregnant. The mucus protects and prevents anything from traveling up the cervix. 72 hours before labor, your cvx begins to change and the mucus loosens and mixes w/ blood from cervical change until it falls out as a "plug." This doesn't always have to happen, but usually means you're getting close to labor.