During pregnancy, the body undergoes many changes in preparation for childbirth. One such change involves the cervical mucus plug, a natural part of the gestational process that often generates questions. Understanding its role and what its release signifies can provide reassurance and clarify next steps.
The Purpose of the Mucus Plug
The cervical mucus plug is a thick collection of mucus that forms early in pregnancy, sealing the cervical canal. It acts as a protective barrier, deterring bacteria and other potential sources of infection from reaching the developing fetus.
Its appearance can vary, often described as clear, off-white, yellow, or brownish. It may also be streaked with pink or red blood, which is normal as the cervix begins to change. The mucus plug typically measures about one to two inches in length and one to two tablespoons in volume, though it can come out gradually in smaller pieces.
What Its Release Indicates
The expulsion of the mucus plug, sometimes called “bloody show” if tinged with blood, is a common sign that the cervix is undergoing changes in preparation for labor. This means the cervix is beginning to soften, thin (efface), and slightly open (dilate). While its release indicates your body is preparing for childbirth, it does not mean labor is immediate.
The time between losing the mucus plug and the onset of active labor can vary significantly, from a few hours to several days or even weeks. It is distinct from the breaking of the amniotic sac, or “water breaking,” which involves a gush or steady trickle of clear fluid. The mucus plug can also be dislodged by activities such as sexual intercourse or a cervical examination.
What to Do Next
If you notice your mucus plug has come out, remain calm. Observe the amount and appearance of the mucus, noting its color and consistency. It is important to differentiate it from a sudden gush of clear fluid, which indicates your water has broken.
Unless advised otherwise by your healthcare provider, you can continue with your normal daily activities. Pay attention to any accompanying symptoms, such as regular contractions that become stronger and more frequent, or any fluid leakage. While losing the mucus plug is a normal progression of late pregnancy, inform your healthcare provider at your next scheduled appointment or call them if you have concerns.
When to Contact Your Healthcare Provider
While the loss of the mucus plug is a normal event, certain situations warrant contacting your healthcare provider immediately. If the discharge is accompanied by heavy bleeding, similar to a menstrual period, rather than just streaks or a small amount of blood, seek medical attention. This could indicate a more serious complication.
Contact your provider if the mucus plug appears before 37 weeks of pregnancy, as this could be a sign of preterm labor. Other concerning signs include foul-smelling or green discharge, which may suggest an infection, or a sudden, uncontrollable gush of fluid, indicating your water has broken.