A Werking Mama - What is a mucus plug? Yep, it's mucus that blocks the cervical canal that is meant to protect your uterus from bacteria and pathogens that could come in.
Belle Vue's Cambridge Hospital - Losing a mucus plug during pregnancy can be a precursor to childbirth. As the cervix begins to open wider in preparation for delivery, the mucus plug is
![Mucus plug – what is it and what does it look like? | Pregnancy, Worries and discomforts articles & support | NCT Mucus plug – what is it and what does it look like? | Pregnancy, Worries and discomforts articles & support | NCT](https://www.nct.org.uk/sites/default/files/inline-images/Fertile_Cervical_Mucus_2014-01-11_00-09.jpg)