What is the mucus plug?
The mucus plug is a collection of cervical mucus in your cervical canal.
When you become pregnant, your body starts to prepare to support and nourish new life. That also includes protecting that new life from bacteria and germs. Once the egg becomes fertilized, it needs to attach to the uterine wall. As the egg implants to the uterine wall, the cervical canal begins to secrete mucus.
The mucus secreted from the cervical canal has two main purposes:
- To trap and bind bacteria that find their way into the cervical canal
- To keep the area moist
Throughout your pregnancy, the mucus continues to collect and eventually seals the cervical canal completely. This final seal keeps bacteria on the outside from coming in and keeps it moist inside. Once the mucus has completely sealed the cervical canal, it is known as the mucus plug.