A nose that has been blocked for two months with no cold to explain it is one of the odder pregnancy symptoms, and one of the least discussed — mostly because it does not sound serious enough to raise. It has a name, a mechanism, and one genuinely important thing not to do about it.
The short answer: oestrogen and a large rise in blood volume swell the lining of the nose. That is rhinitis of pregnancy — persistent congestion with no infection and no allergy, which clears within about two weeks of birth. Saline, humidified air, sleeping propped up and nasal strips are what help. Decongestant sprays cause rebound congestion and make it worse; ask a pharmacist before using anything. A nosebleed that will not stop after 20 minutes of proper pressure needs urgent assessment.
Why it happens
The nasal lining is erectile tissue — it swells and shrinks with blood flow all the time, which is why one nostril is usually more open than the other. In pregnancy, oestrogen increases blood flow to mucous membranes and total blood volume rises by roughly half. The lining becomes engorged, the airway narrows, and glandular secretion increases at the same time. So it is both blocked and runny, which is why it is so often mistaken for a cold that never ends.
It is worse lying down because that redistributes blood towards the head, which is why it dominates the night rather than the day, and why it costs sleep disproportionately to how trivial it seems.
What is normal
| Rhinitis of pregnancy | Something else | |
|---|---|---|
| Duration | Weeks to months, persistent | Under a week and resolving — likely a cold |
| With it | Nothing — no fever, no sore throat, no cough | Fever, facial pain or pressure, green discharge, toothache — sinusitis |
| Itch | None | Itchy nose and eyes, sneezing bouts — allergy |
| Nosebleeds | Occasional, stop with pressure | Heavy, frequent, or not stopping after 20 minutes |
| Breathing | Blocked nose, mouth-breathing at night | Snoring with pauses or gasping, or daytime sleepiness — worth mentioning |
That last row deserves a word. Nasal congestion in pregnancy increases snoring, and heavy snoring with witnessed pauses is worth raising with your midwife rather than treating as a joke — sleep-disordered breathing in pregnancy is associated with blood pressure problems.
How to stop a nosebleed properly
- Sit up and lean forward, not back. Tilting back sends blood down your throat and makes you sick.
- Pinch the soft part of the nose, just below the bony bridge — not the bridge itself.
- Hold for 10 to 15 minutes without releasing to check. Checking restarts the clock; this is the step almost everyone gets wrong.
- Afterwards, avoid blowing your nose, bending down or hot drinks for a few hours.
Seek urgent help if a nosebleed has not stopped after 20 minutes of continuous correct pressure, if it is very heavy, if you feel faint, or if you are also bleeding elsewhere — gums, bruising — which points at a clotting question rather than a nose. Ring your midwife about facial pain with fever and coloured discharge (sinusitis, which may need treatment), or about heavy snoring with pauses in breathing.
Nasal congestion in pregnancy — at a glance
Oestrogen increases blood flow to mucous membranes and blood volume rises by around half, engorging the erectile tissue lining the nose and narrowing the airway while glandular secretion increases — so the nose is blocked and running at once, which is why it is repeatedly mistaken for an endless cold. Rhinitis of pregnancy is congestion lasting six weeks or more with no infection and no allergic cause, worse lying down and therefore worst at night, and it resolves within about two weeks of birth. Saline rinses as often as wanted, humidified air, sleeping propped up, nasal strips and gentle exercise are what help. Decongestant sprays are the trap: they work for a few days and then produce rebound congestion that becomes self-sustaining, so nothing should be used without asking a pharmacist. Nosebleeds are common and are stopped by leaning forward and pinching the soft part of the nose for 10 to 15 minutes without releasing; failure after 20 minutes needs urgent assessment, as does bleeding from the gums or easy bruising alongside it.
Inside Baby Novum: sleep quality sits in the same daily check-in as symptoms, which is how a nose that seemed too minor to mention gets connected to six weeks of broken nights — and that connection is what makes it worth raising at an appointment. Encrypted on the device, no account, no server copy.
Frequently Asked Questions
Why is my nose blocked in pregnancy?
Oestrogen increases blood flow to mucous membranes and the lining of the nose swells, narrowing the airway. The same 50% rise in blood volume that engorges the gums engorges the nose. The result is called rhinitis of pregnancy: congestion lasting six weeks or more, with no infection and no allergic cause, that resolves within about two weeks of giving birth.
How is it different from a cold or hay fever?
A cold has other symptoms — sore throat, cough, aches — and it resolves in a week or so. Allergy comes with itching, sneezing bouts and watery eyes, and it varies with exposure. Rhinitis of pregnancy is congestion that just persists, often worse lying down and worse at night, without any of the extras, and it started with the pregnancy rather than with a season.
Can I use a decongestant nasal spray?
This is the main thing worth knowing. Decongestant sprays work well for a few days and then cause rebound congestion — the nose becomes more blocked as each dose wears off, so you use more, and it becomes self-sustaining. That happens in anyone, pregnant or not, and in pregnancy you would then be treating a spray dependency on top of a nose that was going to unblock itself at birth. Ask a pharmacist before using anything, and say how many weeks you are.
Are nosebleeds normal in pregnancy?
Yes, and for the same reason — engorged, more fragile vessels in a swollen lining. To stop one: sit up, lean forward, and pinch the soft part of the nose just below the bridge for 10 to 15 minutes without letting go to check. Do not tilt your head back. If it has not stopped after 20 minutes of proper pressure, or it is very heavy, that needs urgent assessment.
What actually helps a blocked nose in pregnancy?
Saline — rinses, sprays or drops — as often as you like, since it is salt water and nothing else. A humidifier or a bowl of water near a radiator, because dry air makes it worse. Sleeping propped up on an extra pillow. Nasal strips, which work mechanically. And gentle exercise, which temporarily opens the nose. It resolves after birth, which is the piece of information that makes the rest bearable.