What Is a Mucus Plug?

Have you heard of the mucus plug and wondered what it means for your pregnancy? As labour approaches, this completely normal part of pregnancy plays an important role in protecting your baby. The cervical mucus plug forms early to act as a barrier in your cervix, shielding your little one from infections. 

Some parents might not notice when they lose their mucus plug, while others may observe their mucus plug discharge. Knowing what a mucus plug is, how it looks and how long after losing it labour might start can help you feel more prepared as your due date nears.

What Is the Mucus Plug?

The mucus plug is a natural and vital part of pregnancy, forming early on to help protect your baby. Its primary role is to prevent bacteria from entering the uterus. As labour nears, hormonal changes and cervical dilation cause the mucus plug to dislodge and pass through the vagina. You can think of it as a natural seal between your uterus and vagina, quietly working to safeguard your pregnancy.

The mucus plug discharge is sometimes referred to as the ‘bloody show’ because when released, it may mix with a small amount of blood, which may give it a pink, red or brown tint, depending on individual circumstances.

Mucus Plug vs Bloody Show

While the mucus plug and ‘bloody show’ are closely related, they aren’t the same. The mucus plug is a thick, jelly-like substance that forms in the cervix during pregnancy, creating a protective barrier. 

On the other hand, the ‘bloody show’ specifically refers to the presence of blood in the discharge. This happens when small blood vessels in the cervix break as they soften and open, often mixing with the mucus plug to create a pink, red or brown hue. 

It’s important to note that losing your mucus plug or experiencing the ‘bloody show’ doesn’t always mean labour is imminent. For some, labour begins within hours or days; for others, it might still be weeks away. If you’re unsure about what you’re experiencing, describe it to your midwife or GP, who can provide clarity.

Mucus Plug vs Discharge

While the mucus plug and vaginal discharge may appear similar, they serve different purposes during pregnancy. The mucus plug is a protective barrier, while vaginal discharge is a more common occurrence throughout pregnancy. As your pregnancy progresses, you may notice an increase in vaginal discharge, especially during the final weeks. This discharge, known as leukorrhoea, is typically thin, milky and odourless, helping to keep the vagina clean. Towards the end of pregnancy, it may contain streaks of sticky, jelly-like pink mucus. 

What Does a Mucus Plug Look Like?

If you’re wondering what a mucus plug looks like, it’s usually jelly-like in texture and clear or white in colour. It might be streaked with a small amount of blood, giving it a pink, red or brown tint. The mucus plug may come away as a single clump about the size of a 50p coin or in smaller pieces over several hours or days. Its thick, gel-like consistency makes it quite different from regular vaginal discharge.

When Do You Lose Your Mucus Plug?

The mucus plug may loosen and pass out of the vagina at any point during late pregnancy, right up to birth, as it can be released during labour without being noticed. Some people don’t feel it or recognise when it happens, as the process is often subtle.

When the mucus plug comes away, it’s commonly referred to as a ‘show’. However, it’s important to remember that labour might still be days or even weeks away after a ‘show’.

Your midwife may offer advice and reassurance if you’re uncertain or have concerns about losing your mucus plug.

How Do I Know If I’ve Lost My Mucus Plug?

You’ll know you’ve lost your mucus plug if you notice a discharge that’s thicker and stickier than usual. The mucus plug may come out in one thick piece or smaller parts over time. You might see it on toilet paper or in your underwear, but it's also possible to lose it without realising.

The key difference is the texture and colour of the discharge compared to your normal pregnancy discharge. If you see any heavy bleeding or are unsure, reach out to your doctor or midwife immediately.

What Happens When You Lose Your Mucus Plug?

Losing your mucus plug is a sign that your body is preparing for labour, but it doesn’t mean labour will start immediately. When the mucus plug dislodges, it’s a signal that your cervix is beginning to soften and dilate. This is a normal process as your body gets ready for birth.

After losing the mucus plug, you might experience other signs of labour, such as contractions or your water breaking. However, it’s possible for labour to still be days or even weeks away. It’s normal to see a small amount of red or brown blood, but if there is a larger amount of blood or any other unusual symptoms after losing your mucus plug, it’s important to contact your doctor or midwife for immediately.

How Long After Losing the Mucus Plug Does Labour Start?

Losing your mucus plug or having a ‘show’, is a normal sign that your body is preparing for labour. However, it doesn’t always mean labour will begin immediately. You don’t need to contact your midwife or visit the hospital unless the discharge appears very bloody or you’re worried about its appearance. If you’re unsure, speaking with your midwife or GP may help put your mind at ease.

Things to Avoid After Losing Mucus Plug

In most cases, there are no specific restrictions after you lose your mucus plug, especially if you are full-term and your water hasn’t broken. It is a normal part of pregnancy and usually nothing to worry about. 

However, there are a few things to be mindful of:

• Fresh blood. If you notice a significant amount of fresh, bright red blood with the show, contact your maternity unit immediately, as this could indicate something other than the loss of your mucus plug.

• Signs of infection. If you experience vaginal itching, soreness, pain or a foul smell from the discharge, it could signal an infection. Let your GP or midwife know immediately to ensure prompt treatment and protect both you and your baby.

• Clear fluid. A large amount of clear fluid may mean your waters have broken. Contact your maternity unit to check whether labour is beginning and further action is needed.

While the loss of your mucus plug is typically harmless, being aware of these signs may help you stay safe and informed. When in doubt, consult your midwife or doctor for guidance.

The Bottom Line

Losing your mucus plug is a normal part of late pregnancy and signals that your cervix is preparing for labour. However, it doesn’t mean labour will start immediately – it could still be hours, days, or even weeks away. Keep an eye on other signs like regular contractions or your waters breaking and contact your midwife or GP if you’re unsure or have any concerns.

As you prepare for your baby’s arrival, check out our hospital bag checklist to make sure you’re ready for the big day. Also, don’t forget to join the Pampers Club to enjoy discounts and rewards on nappies and other baby essentials!

_{How We Wrote This Article The information in this article is based on expert advice found in trusted medical and government sources, such as the National Health Service (NHS). You can find a full list of sources used for this article below. The content on this page should not replace professional medical advice. Always consult medical professionals for full diagnosis and treatment.}