Maternal Health

Losing Mucus Plug and Bloody Show Before Labor

Medically reviewed by Dr. Lisa Okafor, MD, FACOG · Board-Certified OB-GYN

Content reviewed against published ACOG, NIH, March of Dimes guidelines

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Your health matters just as much as your baby's. If you are dealing with losing mucus plug and bloody show before labor, here is what you need to know.

The short answer

The mucus plug is a thick collection of mucus that seals the cervical opening during pregnancy to protect against infection. Losing the mucus plug (which may be accompanied by a bloody show - mucus tinged with pink or brown blood) is a sign that your cervix is beginning to dilate in preparation for labor. It can happen days to weeks before labor begins.

Key takeaways

  • The mucus plug is a thick collection of mucus that seals the cervical opening during pregnancy to protect against infection. Losing the mucus plug (which may be accompanied by a bloody show - mucus tinged with pink or brown blood) is a sign that your cervix is beginning to dilate in preparation for labor. It can happen days to weeks before labor begins.
  • Usually normal when: Thick, jelly-like mucus discharge (clear, white, yellowish, or slightly pink) after 37 weeks
  • Call your doctor if: Mucus plug loss before 34 weeks, which could indicate preterm cervical changes
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What Parents Should Know

According to ACOG, NIH, March of Dimes guidelines, the mucus plug is a thick collection of mucus that seals the cervical opening during pregnancy to protect against infection. Losing the mucus plug (which may be accompanied by a bloody show - mucus tinged with pink or brown blood) is a sign that your cervix is beginning to dilate in preparation for labor. It can happen days to weeks before labor begins. At Third trimester, the mucus plug is typically lost in the final weeks of pregnancy as the cervix begins to soften, thin (efface), and open (dilate). It may come out all at once as a thick blob or gradually as increased mucus discharge. A bloody show adds pink, red, or brown blood streaking to the mucus. This is caused by small blood vessels breaking as the cervix changes. It is generally considered normal when thick, jelly-like mucus discharge (clear, white, yellowish, or slightly pink) after 37 weeks. However, you should contact your pediatrician promptly if mucus plug loss before 34 weeks, which could indicate preterm cervical changes.

Sources: [1], [2], [3]

Normal vs. Concerning

Usually Normal
Worth Discussing
Thick, jelly-like mucus discharge (clear, white, yellowish, or slightly pink) after 37 weeks
Mucus plug loss before 34 weeks, which could indicate preterm cervical changes
Mucus streaked with small amounts of pink or brown blood (bloody show)
Heavy bright red bleeding (soaking a pad) rather than blood-tinged mucus
Mucus plug loss after a cervical check at a prenatal appointment
A sudden gush of clear fluid suggesting your water may have broken
No heavy bleeding, just mucus with blood streaks
You lose your mucus plug between 34-37 weeks

By Age

What to expect by age

Third trimester

The mucus plug is typically lost in the final weeks of pregnancy as the cervix begins to soften, thin (efface), and open (dilate). It may come out all at once as a thick blob or gradually as increased mucus discharge. A bloody show adds pink, red, or brown blood streaking to the mucus. This is caused by small blood vessels breaking as the cervix changes.

Labor & delivery

Losing the mucus plug does not mean labor is imminent - it can happen days or even weeks before active labor. Some people lose it without noticing. If you lose your mucus plug before 37 weeks, contact your provider as it could indicate preterm cervical changes. After 37 weeks, losing your mucus plug is a reassuring sign that your body is preparing for delivery.

What to Tell Your Pediatrician

  • Describe when you first noticed losing mucus plug and bloody show before labor and how it has changed over time.
  • Note your baby's current age and which age-specific patterns you are seeing.
  • Mention if you lose your mucus plug between 34-37 weeks.
  • Mention if you are unsure whether discharge is mucus plug or something else.
  • Let your doctor know if you have noticed any related concerns, such as changes in feeding, sleep, or movement patterns.
  • Bring a list of any questions or observations you want to discuss at the appointment.

What Should You Do?

When to take action

Probably normal when...
  • Thick, jelly-like mucus discharge (clear, white, yellowish, or slightly pink) after 37 weeks
  • Mucus streaked with small amounts of pink or brown blood (bloody show)
  • Mucus plug loss after a cervical check at a prenatal appointment
  • No heavy bleeding, just mucus with blood streaks
Mention at your next visit when...
  • You lose your mucus plug between 34-37 weeks
  • You are unsure whether discharge is mucus plug or something else
  • The bloody show is accompanied by other signs of early labor
Act now when...
  • Mucus plug loss before 34 weeks, which could indicate preterm cervical changes
  • Heavy bright red bleeding (soaking a pad) rather than blood-tinged mucus
  • A sudden gush of clear fluid suggesting your water may have broken

What You Can Do at Home

  • Keep track of when you notice losing mucus plug and bloody show before labor — noting the time of day, duration, and any triggers can help your pediatrician.
  • Remember that thick, jelly-like mucus discharge (clear, white, yellowish, or slightly pink) after 37 weeks — this is generally within the range of normal.
  • At Third trimester, focus on observation rather than intervention unless your pediatrician advises otherwise.
  • Prioritize your own rest and nutrition. Accept help when offered, and do not hesitate to reach out to your healthcare provider.
  • While monitoring at home, seek immediate care if mucus plug loss before 34 weeks, which could indicate preterm cervical changes.

How to Know If Your Water Has Broken

When your water breaks, the amniotic sac surrounding your baby ruptures, releasing amniotic fluid. This can be a dramatic gush or a slow, steady trickle. Amniotic fluid is typically clear, pale yellow, or slightly pink, and is odorless or mildly sweet-smelling (not like urine). If you think your water may have broken, contact your provider.

Braxton Hicks vs Real Contractions

Braxton Hicks contractions are irregular, usually painless "practice" contractions that help your uterus prepare for labor. Unlike real labor contractions, they do not increase in frequency, intensity, or duration over time, and they typically stop with rest, hydration, or a change in activity.

Preterm Labor Signs

Preterm labor is labor that begins before 37 weeks of pregnancy and affects about 10% of pregnancies. Recognizing the signs early is critical because treatment can often delay delivery, giving the baby more time to develop. Signs include regular contractions, lower back pain, pelvic pressure, vaginal discharge changes, and fluid leaking. Contact your provider immediately if you suspect preterm labor.

Guide

Postpartum Recovery Guide

Week-by-week postpartum recovery timeline and warning signs.

Guide

When to Call the Doctor

General guide on when to call the pediatrician, visit urgent care, or go to the ER.

Frequently asked questions

Is losing mucus plug and bloody show before labor normal?
The mucus plug is a thick collection of mucus that seals the cervical opening during pregnancy to protect against infection. Losing the mucus plug (which may be accompanied by a bloody show - mucus tinged with pink or brown blood) is a sign that your cervix is beginning to dilate in preparation for labor. It can happen days to weeks before labor begins.
When should I call the doctor about losing mucus plug and bloody show before labor?
Mucus plug loss before 34 weeks, which could indicate preterm cervical changes Heavy bright red bleeding (soaking a pad) rather than blood-tinged mucus A sudden gush of clear fluid suggesting your water may have broken
When is losing mucus plug and bloody show before labor normal?
Thick, jelly-like mucus discharge (clear, white, yellowish, or slightly pink) after 37 weeks Mucus streaked with small amounts of pink or brown blood (bloody show) Mucus plug loss after a cervical check at a prenatal appointment
What causes losing mucus plug and bloody show before labor?
The mucus plug is a thick collection of mucus that seals the cervical opening during pregnancy to protect against infection. Losing the mucus plug (which may be accompanied by a bloody show - mucus tinged with pink or brown blood) is a sign that your cervix is beginning to dilate in preparation for labor. It can happen days to weeks before labor begins. Common explanations include: Thick, jelly-like mucus discharge (clear, white, yellowish, or slightly pink) after 37 weeks. Mucus streaked with small amounts of pink or brown blood (bloody show).
What should I mention to my pediatrician about losing mucus plug and bloody show before labor?
You should mention losing mucus plug and bloody show before labor at your next visit if: You lose your mucus plug between 34-37 weeks. You are unsure whether discharge is mucus plug or something else. The bloody show is accompanied by other signs of early labor.
Is losing mucus plug and bloody show before labor normal at Third trimester?
The mucus plug is typically lost in the final weeks of pregnancy as the cervix begins to soften, thin (efface), and open (dilate). It may come out all at once as a thick blob or gradually as increased mucus discharge. A bloody show adds pink, red, or brown blood streaking to the mucus. This is caused by small blood vessels breaking as the cervix changes.
Is losing mucus plug and bloody show before labor normal at Labor & delivery?
Losing the mucus plug does not mean labor is imminent - it can happen days or even weeks before active labor. Some people lose it without noticing. If you lose your mucus plug before 37 weeks, contact your provider as it could indicate preterm cervical changes. After 37 weeks, losing your mucus plug is a reassuring sign that your body is preparing for delivery.
Should I go to the ER for losing mucus plug and bloody show before labor?
Seek emergency care if mucus plug loss before 34 weeks, which could indicate preterm cervical changes, or if heavy bright red bleeding (soaking a pad) rather than blood-tinged mucus. When in doubt, call your pediatrician's after-hours line for guidance.
Does losing mucus plug and bloody show before labor go away on its own?
In many cases, losing mucus plug and bloody show before labor resolves on its own, especially when thick, jelly-like mucus discharge (clear, white, yellowish, or slightly pink) after 37 weeks.
ACOGNIHMARCH OF DIMES

References

  1. [1]American College of Obstetricians and Gynecologists. How to Tell When Labor Begins. ACOG FAQ, 2022. ACOG
  2. [2]National Library of Medicine. Normal Labor. StatPearls, 2023. NIH
  3. [3]March of Dimes. Signs of Labor. March of Dimes, 2023. March of Dimes

Doctor Visit Checklist

Bring this checklist to your next pediatrician visit to discuss Losing Mucus Plug and Bloody Show Before Labor.

Things to mention

  • Describe when you first noticed losing mucus plug and bloody show before labor and how it has changed over time.
  • Note your baby's current age and which age-specific patterns you are seeing.
  • Mention if you lose your mucus plug between 34-37 weeks.
  • Mention if you are unsure whether discharge is mucus plug or something else.
  • Let your doctor know if you have noticed any related concerns, such as changes in feeding, sleep, or movement patterns.
  • Bring a list of any questions or observations you want to discuss at the appointment.

Observations to share

  • You lose your mucus plug between 34-37 weeks
  • You are unsure whether discharge is mucus plug or something else
  • The bloody show is accompanied by other signs of early labor

Urgent signs to report immediately

  • Mucus plug loss before 34 weeks, which could indicate preterm cervical changes
  • Heavy bright red bleeding (soaking a pad) rather than blood-tinged mucus
  • A sudden gush of clear fluid suggesting your water may have broken

My notes

From ismybabyalright.com — free, evidence-based baby health guides

All content follows our editorial policy and is reviewed against published clinical guidelines.

2,705 evidence-based guides6 authoritative medical sources5 medical advisory board members

Related Resources

Feeding & Pumping GuidePregnancy TrackerBaby Sign Language GuideEmergency ContactsBaby Tracker

Bottom line

Most cases of losing mucus plug and bloody show before labor are normal. Talk to your pediatrician if mucus plug loss before 34 weeks, which could indicate preterm cervical changes.

Trust your instincts. If something feels wrong, reach out to your pediatrician. Worrying about your baby means you care — that is a good thing.

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Braxton Hicks vs Real Contractions

Braxton Hicks contractions are irregular, usually painless "practice" contractions that help your uterus prepare for labor. Unlike real labor contractions, they do not increase in frequency, intensity, or duration over time, and they typically stop with rest, hydration, or a change in activity.

Preterm Labor Signs

Preterm labor is labor that begins before 37 weeks of pregnancy and affects about 10% of pregnancies. Recognizing the signs early is critical because treatment can often delay delivery, giving the baby more time to develop. Signs include regular contractions, lower back pain, pelvic pressure, vaginal discharge changes, and fluid leaking. Contact your provider immediately if you suspect preterm labor.

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