Pregnancy brings many changes, and understanding them can ease apprehension. The expulsion of the mucus plug is a normal late-pregnancy event that often prompts questions about its appearance. Recognizing what is normal can help ease concerns as the body prepares for childbirth.
What the Mucus Plug Is
The mucus plug is a collection of cervical mucus that forms early in pregnancy, sealing the cervix. This protective barrier acts like a natural cork, preventing infection from reaching the developing fetus. Hormonal changes, particularly an increase in progesterone, contribute to its formation. It remains in place throughout most of pregnancy, providing protection.
Towards the end of pregnancy, the cervix begins to soften, thin, and dilate in preparation for labor. These changes can cause the mucus plug to dislodge and be expelled. Its expulsion timing varies greatly, occurring from a few weeks before labor to just as labor begins, or even during labor itself.
Appearance in the Toilet
When expelled, the mucus plug’s appearance can vary significantly. It typically has a thick, jelly-like, or stringy consistency, often described as snot-like. The volume ranges from about one to two tablespoons, and it might come out as a single glob or in smaller, fragmented pieces over time. Some individuals may not even notice its expulsion, especially if it occurs gradually or blends with increased vaginal discharge common in late pregnancy.
Its color can differ. It is frequently clear, off-white, or yellowish. However, it can also appear pink, brownish, or streaked with red blood, known as “bloody show.” This blood tinge results from tiny blood vessels in the cervix rupturing as it softens and dilates. A small amount of blood is considered normal.
Differentiate the mucus plug from typical vaginal discharge, which is thinner and lighter in color. The mucus plug is noticeably thicker and more gelatinous. While it may resemble mucus from a cold, it should not have a strong or foul odor.
When to Seek Medical Advice
While mucus plug expulsion is a normal sign of the body preparing for childbirth, certain characteristics or accompanying symptoms warrant contacting a healthcare provider. Contact your provider if the mucus plug appears before 37 weeks of pregnancy, as this could indicate a risk of preterm labor. Your provider may assess your situation and potentially examine your cervix.
Contact your healthcare provider for significant bleeding beyond streaks or a light tinge. Heavy, bright red bleeding, especially if it exceeds about two tablespoons or is accompanied by pain or strong contractions, could signal a more serious complication such as placental abruption or placenta previa. Also call if the discharge has a foul odor or green color, as these might indicate an infection. Always contact your healthcare provider if you have questions or feel anxious about what you observe.