Snoring During Pregnancy: Why It Happens & Safe Solutions

If you've started snoring during pregnancy — or your snoring has gotten significantly louder — you're not imagining it, and you're not alone. Roughly 30-50% of pregnant women snore by the third trimester, even those who never snored before. It's a normal part of pregnancy for many people, but in some cases it can also be an early signal of something that needs medical attention.

This article explains why pregnancy makes snoring more common, what's safe to try at home, when to see your doctor, and what to do about the dry mouth and morning sore throat that often come along with it. We're a team that builds mouth tape for sensitive sleepers, and we hear from pregnant customers regularly asking what's safe and what isn't. We're going to be careful throughout — pregnancy is one of those situations where general internet advice should never replace your obstetrician's input. We're not doctors, full stop.

If you want the broader picture on snoring causes and solutions outside of pregnancy, see our complete guide on how to stop snoring.

Why Pregnancy Causes Snoring

Several physiological changes during pregnancy stack up to make snoring far more likely. Most women experience some combination of all of these.

1. Increased Blood Volume Causes Nasal Swelling

Blood volume increases by roughly 40-50% during pregnancy. Combined with hormonal shifts (especially rising estrogen), this causes the lining of your nasal passages to swell — a condition called pregnancy rhinitis. About 20-30% of pregnant women experience persistent nasal congestion that wasn't there before.

The result: even if your nose feels fine during the day, the moment you lie down and blood pools more in nasal tissues, congestion increases. This forces partial or complete mouth breathing, which feeds directly into snoring.

2. Weight Gain in the Neck and Chest

Healthy pregnancy weight gain is usually 25-35 pounds, much of it concentrated in the upper body during the second and third trimesters. Even modest extra tissue around the neck narrows the upper airway, making vibration during sleep more likely.

This is why snoring often appears or significantly worsens in the third trimester — weight gain peaks, the diaphragm is being pushed up by the growing uterus, and breathing becomes physically more effortful.

3. The Uterus Pushes Up on the Diaphragm

By the third trimester, the uterus crowds upward and presses on the diaphragm, reducing lung capacity by 20-30%. Your body compensates by breathing more deeply and faster, but the increased airflow effort means more turbulence as air moves through any narrowed area in your throat.

4. Hormonal Effects on Tissue

Progesterone — elevated significantly during pregnancy — relaxes smooth muscle throughout the body. This includes some of the airway tissue, leading to slightly more collapse during sleep.

5. Sleep Position Becomes More Limited

Pregnancy generally shifts you toward back sleeping (it's harder to comfortably stay on your side as your belly grows), and back sleeping is the worst position for snoring. The combination of "have to sleep, can't get comfortable on side" plus "back sleeping makes me snore" creates a frustrating loop in the third trimester.

When to Worry: Snoring as a Warning Sign

This is the section that matters most, and we want to be very clear about it.

Most snoring during pregnancy is harmless and resolves after delivery. But chronic, loud snoring during pregnancy has been linked in research to a higher risk of:

• Gestational hypertension (high blood pressure that develops during pregnancy)
• Preeclampsia (a serious pregnancy complication involving high blood pressure and organ damage)
• Gestational diabetes
• Lower birth weight

The link is strongest with new-onset, loud, frequent snoring that develops during pregnancy. If you've always snored, the elevated risk is smaller. If you started snoring during pregnancy or your snoring became dramatically louder, your obstetrician should know. The American College of Obstetricians and Gynecologists (ACOG) takes pregnancy-related sleep changes seriously, and so should you.

See your doctor promptly if you experience any of these:

• Loud snoring with witnessed pauses in breathing or gasping awakenings
• Severe daytime exhaustion that goes beyond normal pregnancy tiredness
• Morning headaches
• Swelling that's sudden or significant (especially in face and hands)
• Visual disturbances or persistent severe headache
• Blood pressure readings outside your normal range
• Difficulty breathing when lying down

These can all be signs of obstructive sleep apnea or preeclampsia, both of which are taken very seriously during pregnancy and treated effectively when caught early. Your OB visits include blood pressure monitoring partly for this reason — but if you're noticing symptoms between visits, call in.

Sleep Apnea During Pregnancy

A note on this specifically because it's underdiagnosed in pregnancy. Obstructive sleep apnea (OSA) — where the airway collapses repeatedly during sleep, cutting off breathing — becomes more common during pregnancy due to all the same factors that cause regular snoring. Women who have OSA during pregnancy are at higher risk for the complications listed above.

If your partner notices you stop breathing during sleep, gasp awake, or your snoring is unusually loud and irregular, ask your doctor about a sleep study. At-home sleep tests are available and entirely safe during pregnancy. CPAP, the standard treatment for sleep apnea, is also safe during pregnancy and often dramatically improves both sleep and overall pregnancy outcomes.

This isn't something to "tough out" or assume will resolve on its own.

Safe Solutions: What Actually Helps

Now for the practical part. Here's what's safe and effective during pregnancy, ranked roughly by impact.

1. Side Sleeping (Especially Left Side)

Side sleeping is the single most impactful change for pregnancy-related snoring, and it's also the position your doctor is already recommending for the third trimester anyway. Sleeping on your left side improves blood flow to the placenta and reduces pressure on the inferior vena cava.

The challenge is staying on your side as your belly grows. Solutions:

• A pregnancy pillow (C-shaped or U-shaped) is the most effective single investment. It supports your back, belly, and knees simultaneously and makes side sleeping comfortable through the third trimester.
• A wedge pillow under your belly for extra support
• A regular pillow between your knees to keep hip alignment

If you wake up on your back, just gently roll back to your side — don't stress about brief back-sleeping. Persistent back sleeping is the issue, not occasional shifts.

2. Address Nasal Congestion (Pregnancy-Safe Methods)

Pregnancy rhinitis is one of the biggest drivers of pregnancy snoring, and treating it directly often produces dramatic improvement. Pregnancy-safe approaches:

• Saline nasal rinse (Neti pot or squeeze bottle with sterile saline). Completely safe in pregnancy, often immediately effective. Use distilled or boiled-then-cooled water.
• Saline nasal spray. Same principle, more convenient.
• A bedroom humidifier at 40-50% humidity. Reduces tissue swelling.
• Elevating the head of your bed by 4-6 inches (a wedge under the mattress, or a pregnancy wedge pillow under your upper body). Reduces fluid pooling in nasal tissues at night.
• Keeping bedding clean to minimize allergen exposure — wash pillowcases weekly in hot water.
• A HEPA air purifier in the bedroom if allergies are a factor.

What NOT to use without your doctor's approval:

• Decongestant pills or sprays (pseudoephedrine, phenylephrine, oxymetazoline). These should not be used during pregnancy without explicit medical guidance, especially in the first trimester.
• Antihistamines: Some are considered safe (like Claritin), but always check with your OB before starting any medication during pregnancy.
• Nasal steroid sprays: Some are pregnancy-safe, but don't start one without your doctor's input.

3. Manage Sleep Environment

Several environmental changes help:

• Cool the bedroom to around 65-68°F. Cooler air reduces tissue swelling.
• Run a humidifier to keep humidity at 40-50%.
• Wash pillows and bedding regularly in hot water (dust mites worsen pregnancy congestion).
• Keep pets out of the bedroom if you're at all sensitive to dander.
• Elevate the head of your bed rather than just stacking pillows (which can bend your neck unfavorably).

4. Stay Well-Hydrated

Dehydration thickens nasal and throat mucus, worsening snoring. Aim for plenty of water during the day (your OB has likely already emphasized this for general pregnancy hydration).

5. Avoid Late Heavy Meals

Heavy meals close to bedtime can worsen reflux (which is already common in pregnancy), and reflux can intensify snoring. Try to finish dinner 2-3 hours before bed.

What About Mouth Tape During Pregnancy?

We get this question often from pregnant customers, so we'll answer it directly: mouth tape during pregnancy should only be considered after a conversation with your obstetrician.

The reasoning:

• Pregnancy makes nasal congestion much more common, and effective nasal breathing is required for safe mouth taping.
• Pregnancy increases sleep apnea risk, and mouth tape is not appropriate for people with sleep apnea.
• Anything that affects breathing during pregnancy carries higher stakes than for non-pregnant adults.

If you're experiencing pregnancy-related mouth breathing and dry mouth, the safest path is:

1. Address nasal congestion first (saline rinses, humidifier, elevation)
2. Optimize sleep position (left side, pregnancy pillow)
3. Talk to your doctor before adding anything else

After delivery, when your body returns to its non-pregnant baseline and (for breastfeeding mothers) you're cleared by your doctor, mouth tape becomes a more reasonable option for residual mouth breathing — particularly the gentler, hypoallergenic options designed for sensitive skin, since postpartum hormonal changes can leave skin more reactive than usual.

Pregnancy Dry Mouth and Sore Throat

If your snoring is also producing morning dry mouth and sore throat, that's the same mouth-breathing-during-sleep pattern many non-pregnant people experience — just intensified by pregnancy congestion. Our articles on dry mouth during pregnancy and sore throat from snoring cover the specifics.

Quick safe relief during pregnancy:

• Sip water during nighttime awakenings (you'll be up anyway in late pregnancy)
• Sugar-free gum with xylitol stimulates saliva
• Warm salt water gargle for sore throat (safe in pregnancy)
• Honey in warm water (safe; just not for infants under 1, which doesn't apply here)

Will the Snoring Go Away After Delivery?

For most women, yes — usually within a few weeks to a couple of months postpartum. Here's the typical pattern:

• Immediately after delivery: Hormone levels start dropping rapidly, blood volume normalizes, and weight loss begins. Some women see snoring improve within days.
• First 2-3 months postpartum: Most pregnancy-related snoring resolves as your body returns to baseline.
• 6+ months postpartum: If you're still snoring, it's worth evaluating like any other adult snoring — weight retention, residual congestion, mouth breathing patterns, or pre-existing tendencies that pregnancy revealed.

If your snoring doesn't resolve postpartum, our complete guide on how to stop snoring covers the next steps.

Frequently Asked Questions

Q: Why did I suddenly start snoring during pregnancy?
A: Several pregnancy changes combine to cause snoring: increased blood volume swells nasal tissues, weight gain narrows the airway, hormonal shifts (especially progesterone) relax airway muscles, and the growing uterus pushes the diaphragm up. About 30-50% of pregnant women snore by the third trimester, even those who never snored before.

Q: Is snoring during pregnancy dangerous?
A: Most pregnancy snoring is harmless and resolves after delivery. But loud, chronic, new-onset snoring during pregnancy has been linked to higher risks of gestational hypertension, preeclampsia, and gestational diabetes. If your snoring is loud, accompanied by gasping or pauses in breathing, or paired with severe daytime exhaustion or sudden swelling, see your obstetrician.

Q: Is mouth taping safe during pregnancy?
A: Mouth taping during pregnancy should only be considered after talking to your obstetrician. Pregnancy increases nasal congestion (which mouth tape requires you not to have) and increases sleep apnea risk (which mouth tape is not appropriate for). Most doctors recommend addressing nasal congestion and optimizing sleep position first, and revisiting mouth tape postpartum if needed.

Q: Will snoring during pregnancy go away after delivery?
A: For most women, yes — within a few weeks to a couple of months postpartum, as hormone levels normalize, blood volume drops, and weight loss begins. If snoring persists 6+ months after delivery, it's worth evaluating like any adult snoring.

Q: What's the best sleep position for pregnancy snoring?
A: Left-side sleeping is best. It reduces snoring by keeping the airway open, AND it's also the position your doctor likely already recommends for the third trimester because it improves blood flow to the placenta. A pregnancy pillow (C-shaped or U-shaped) makes side sleeping much more sustainable.

Q: Can pregnancy snoring affect the baby?
A: Mild, occasional snoring is generally not harmful to the baby. But severe, untreated obstructive sleep apnea during pregnancy has been linked to lower birth weight and other complications. This is why loud, chronic snoring with breathing pauses warrants medical evaluation — diagnosing and treating sleep apnea benefits both you and the baby.

Q: Are there any safe medications for pregnancy snoring?
A: The safest "treatment" is non-medication: position changes, saline rinses, humidifier, head elevation. Some antihistamines (like Claritin) and certain nasal sprays may be considered safe by your doctor, but never start any medication during pregnancy without your OB's approval. Decongestants like pseudoephedrine should be avoided unless specifically prescribed.

Where This Lands

Pregnancy snoring is incredibly common, usually harmless, and almost always resolves after delivery. The most effective safe approaches — side sleeping (preferably left side), addressing nasal congestion with saline rinses and humidification, and elevating the head of the bed — handle most cases well.

The important thing is to tell your obstetrician about new-onset loud snoring, especially if it's accompanied by daytime exhaustion, morning headaches, or swelling. Sleep apnea during pregnancy is real, treatable, and connected to outcomes that matter. It's not something to brush off as "just pregnancy snoring."

For the dry mouth and sore throat that often come with pregnancy snoring, focus on environmental changes (humidifier, hydration, head elevation) rather than products or interventions until you've talked with your doctor. Postpartum, when you're back to baseline, the broader range of snoring solutions becomes available.

You're not alone in this, and there's a lot you can do safely. Just keep your obstetrician in the loop on anything that feels significant.

This article is for informational purposes and is not a substitute for professional medical advice. During pregnancy in particular, please consult your obstetrician about any new or worsening symptoms — including snoring.

Last reviewed: May 01, 2026