Mucus Plug Loss
Thick, jelly-like discharge that seals the cervix during pregnancy. Losing it can be an early sign that labor is approaching.
Medically reviewed by healthcare professionals | Last reviewed: March 2026
📅 When It Occurs
Late third trimester, typically after week 37, as cervix prepares for labor
📊 How Common
Universal - all pregnant women have a mucus plug, though not all notice when it releases
Overview
The mucus plug is a protective barrier of thick, sticky mucus that forms in the cervical canal early in pregnancy. It seals the entrance to the uterus, protecting your baby from bacteria and infections throughout pregnancy.
As your body prepares for labor, the cervix begins to soften, thin (efface), and dilate. This process can cause the mucus plug to dislodge. Losing your mucus plug is often called the "bloody show" because it may be tinged with blood.
While losing your mucus plug is a sign that labor is approaching, it doesn't mean labor is imminent. Labor can begin hours, days, or even weeks after losing the mucus plug. Some women don't notice losing it at all.
📆 By Trimester
First Trimester
Does not occur - mucus plug is forming and sealing the cervix
Second Trimester
Does not occur - mucus plug remains intact protecting baby
Third Trimester
Late third trimester only - typically after 37 weeks as labor approaches
🔍 What Causes It?
- •Cervix beginning to dilate (open) in preparation for labor
- •Cervix effacing (thinning and softening)
- •Normal hormonal changes signaling labor approach
- •Vaginal examination can sometimes dislodge it
- •Sexual intercourse may loosen it
- •Natural progression as body prepares for birth
💡 Relief Strategies
- ✓Wear a panty liner or pad to catch discharge - do not use tampons
- ✓Note the time and appearance for your healthcare provider
- ✓Continue normal activities unless other labor signs present
- ✓Stay hydrated and rest when needed
- ✓Monitor for regular contractions which may follow
- ✓Keep your hospital bag ready
- ✓Know that labor could still be days or weeks away
- ✓Take a warm (not hot) bath to relax
⚠️ When to Call Your Doctor
Contact your healthcare provider if you experience:
- ⚠Heavy bleeding (soaking a pad in an hour like a period)
- ⚠Mucus plug releases before 37 weeks (preterm concern)
- ⚠Bright red blood in large amounts
- ⚠Accompanied by severe abdominal pain
- ⚠Regular contractions starting (5-1-1 rule: 5 min apart, 1 min long, for 1 hour)
- ⚠Water breaking (gush or continuous trickle of fluid)
- ⚠Decreased baby movement
- ⚠Fever or signs of infection
Related Symptoms
📅 Explore by Trimester
Learn how this symptom and others change throughout your pregnancy journey: