Many women who have never snored in their lives start snoring during the second or third trimester — studies put the share of pregnant women who snore somewhere between a quarter and a third, and most of it is harmless nighttime noise. But pregnancy snoring has a few wrinkles worth understanding, including one signal that genuinely belongs in a prenatal checkup conversation.
Why Pregnancy Causes Snoring
Pregnancy changes the airway from three directions at once:
- Hormones and blood volume. Estrogen and the roughly 40–50% increase in blood volume swell the mucous membranes — including the ones lining the nose and throat. Swollen nasal tissue narrows the airway before your head even hits the pillow.
- Pregnancy rhinitis. A stuffed nose without any cold is common from the second trimester on, and congestion pushes mouth breathing — a classic snoring trigger and the same mechanism behind the nasal fixes in our guide to snoring causes.
- Weight gain and pressure. Normal pregnancy weight adds tissue around the neck and throat, and the growing uterus presses the diaphragm upward, making each breath move more air through a narrower passage.
- Fatigue. Deep exhaustion relaxes muscles more than usual — including the airway muscles that hold the passage open.
Safe Things to Try
- Sleep on your side, favoring the left. Side sleeping is the single most effective positional fix at any age (see our evidence-ranked remedies guide), and in pregnancy it is the recommended sleep position anyway — it improves blood flow and takes gravity off the airway.
- Saline rinses and a cool-mist humidifier. Both are drug-free ways to reduce the congestion component. Humidifiers are inexpensive and widely available.
- External nasal strips. Adhesive strips work purely mechanically — no medication crosses anywhere it shouldn't — which makes them one of the most pregnancy-friendly tools in the market; our strip guide explains who they help.
- Head-of-bed elevation and an earlier alcohol cutoff. The second one is automatic in pregnancy; elevation adds a little more room for airflow.
What to Skip for Now
- Mandibular advancement mouthpieces. Nothing suggests they harm a pregnancy, but pregnancy changes the gums, jaw, and dental fit — fitting an oral appliance is a job for a dentist or physician, not a boil-and-bite experiment. Park this idea until after delivery unless a provider says otherwise.
- Herbal throat sprays and supplements. "Natural" does not mean pregnancy-safe; skip anything ingested or sprayed without clearing it with your prenatal care team.
- Anything that promises deeper, medicated sleep. Sedating sleep aids are a physician question, full stop.
When Snoring Belongs in the Prenatal Visit
The Good News
Pregnancy snoring is overwhelmingly temporary. Once hormone levels normalize, blood volume returns to baseline, and the diaphragm gets its room back, most snoring that began during pregnancy fades within weeks to months after delivery. If it doesn't, the usual diagnostic sequence — the self-assessment in our causes guide — is the right place to start, ideally after sleep has stopped being a rumor in your household.