Clogged ears during pregnancy are usually caused by the same hormones that sustain your pregnancy. Estrogen and progesterone swell the mucous membranes throughout your body, including the lining of the narrow tubes that connect your middle ears to the back of your throat. When those tubes (called Eustachian tubes) swell shut or stay too open, you feel pressure, fullness, or muffled hearing. The sensation is common, typically harmless, and almost always resolves after delivery.
How Pregnancy Hormones Affect Your Ears
Your Eustachian tubes are lined with the same type of tissue as the inside of your nose. Rising estrogen and progesterone cause that tissue to swell and produce more mucus, which is why so many pregnant people develop chronic stuffiness (sometimes called pregnancy rhinitis). That same swelling can block the Eustachian tubes, trapping air or fluid in the middle ear. The result is a sensation of fullness, muffled sound, or a popping feeling that won’t go away.
In some cases, the opposite problem occurs. A study of 270 pregnant women found that about 7% had Eustachian tubes that stayed abnormally open rather than closed, a condition linked to elevated estriol levels. When the tube stays open, you may hear your own breathing or voice echoing loudly inside your head. Only a fraction of the women with this finding actually noticed symptoms, which suggests many cases are mild enough to go unnoticed.
Blood Volume and Fluid Shifts Play a Role Too
Hormones aren’t the whole story. Your circulating blood volume increases by 30 to 40 percent during pregnancy, and total body water rises by roughly 4 liters. That extra fluid has to go somewhere. In the third trimester especially, fluid shifts from your bloodstream into surrounding tissues, which is the same mechanism behind swollen ankles and a stuffy nose. The inner ear contains its own delicate fluid compartments, and increased circulating volume can disrupt the balance between those fluids in a way that mimics the pressure changes seen in conditions like Ménière’s disease. This may explain why some pregnant people experience not just clogged-ear sensations but also mild dizziness or ringing.
When Symptoms Typically Start and Stop
Ear fullness most often appears in the second or third trimester, when hormone levels and blood volume peak. Third-trimester fluid shifts to the tissues outside your blood vessels make nasal and ear congestion noticeably worse in the final weeks. The good news: pregnancy rhinitis, and the ear clogging that comes with it, typically resolves completely within two weeks after delivery as hormone levels drop and your body sheds the extra fluid.
Hormonal Clogging vs. an Ear Infection
It’s worth knowing when stuffiness is just pregnancy doing its thing and when something else might be going on. Hormone-related congestion produces clear or slightly milky mucus, no fever, and no facial pain. If you develop thick yellow or green nasal discharge, pain or pressure concentrated in your face or around one ear, fever, or general fatigue and malaise, those signs point toward an infection rather than normal pregnancy swelling. Infections during pregnancy are treatable, but they do need attention since the swollen Eustachian tubes already make you more susceptible to fluid building up behind the eardrum.
The Preeclampsia Connection
Rarely, sudden hearing loss or significant new ear pressure after 20 weeks can be a sign of preeclampsia. Preeclampsia causes widespread blood vessel dysfunction that increases fluid leakage into tissues, including the middle ear. In documented cases, fluid accumulation behind the eardrum caused sudden bilateral hearing loss around 35 to 36 weeks. The hearing returned once the underlying condition was managed. Sudden, noticeable hearing changes, especially if paired with headaches, visual disturbances, swelling in the hands or face, or upper abdominal pain, warrant prompt evaluation for blood pressure and related issues.
What Helps Relieve the Pressure
Since the root cause is swollen tissue, anything that reduces nasal and sinus congestion tends to help your ears too.
- Saline nasal irrigation. Rinsing with saline (a neti pot or squeeze bottle) is the most widely recommended first step. Consensus clinical guidelines support its use specifically for pregnancy rhinitis. It has no reported serious adverse effects, and minor irritation can usually be fixed by adjusting the salt concentration or technique.
- Elevating your head at night. Sleeping with your upper body slightly raised helps fluid drain away from your nasal passages and ears rather than pooling while you’re flat. An extra pillow or a wedge under the head of your mattress can make a noticeable difference in morning congestion.
- Staying hydrated. It sounds counterintuitive when you already feel waterlogged, but good hydration helps thin mucus so it drains more easily rather than sitting in swollen passages.
- Swallowing, yawning, or gentle jaw movement. These actions open the Eustachian tubes briefly and can relieve mild pressure. Chewing gum works the same way.
A Note on Decongestants
Over-the-counter oral decongestants are among the most commonly used medications during pregnancy, but the evidence on their safety is mixed. Research has found associations between first-trimester use of certain oral decongestants and a small number of specific, rare birth defects. Nasal spray decongestants carry their own concerns: one ingredient (oxymetazoline) has been linked to possible kidney-related anomalies with second-trimester use. These risks are small in absolute terms, but most guidelines steer pregnant people toward saline irrigation first and reserve medicated options for cases where symptoms are significantly affecting quality of life, and only with a provider’s input.
Be Careful With Forceful Ear Popping
When your ears feel clogged, it’s tempting to pinch your nose and blow hard to force them open. During pregnancy, this carries more risk than usual. Your Eustachian tubes are already swollen and more prone to trapping pressure unevenly, which makes you more susceptible to barotrauma (injury from pressure differences across the eardrum). There is at least one documented case of a pregnant person developing bleeding behind the eardrum from a forceful pressure-equalization attempt during labor. Gentle techniques like swallowing or yawning are safer alternatives.
What to Expect Overall
For most people, pregnancy-related ear clogging is an annoying but temporary companion to the stuffy nose that comes with the territory. It tends to be worst in the final trimester, fluctuates day to day, and clears up on its own after delivery. Saline rinses and head elevation at night are the safest and most effective tools for managing it in the meantime. If the fullness becomes one-sided, is accompanied by pain or sudden hearing loss, or arrives alongside other new symptoms like headaches or swelling, those patterns are worth bringing up at your next appointment or sooner.