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The mysterious pregnancy cough
Pregnancy

The mysterious pregnancy cough

2 min readWeek 15
Key takeaways
2 min
  • Consult your doctor before taking any over-the-counter cough medications during pregnancy, as they may have adverse effects on you or your baby.
  • Use natural alternatives like humidifiers, nasal sprays, and increased fluid intake instead of potentially dangerous expectorant medications.
  • Monitor persistent dry coughs lasting over two weeks, as they could indicate pregnancy-related asthma that requires medical treatment.
  • Understand that pregnancy itself can cause coughing due to increased pressure on lungs, acid reflux, and cardiovascular changes.
  • Seek medical attention if your cough persists, as it may signal flu or infections that could be dangerous during pregnancy.

Pregnancy coughs occur due to increased lung pressure from your growing abdomen, acid reflux, and cardiovascular changes. While coughing won't cause miscarriage, avoid over-the-counter medications without doctor approval and use natural remedies like humidifiers and increased fluids instead.

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Just like when you’re not pregnant, a cough can start up for a variety of reasons. It can be a little annoyance, or it can develop into something more serious. When you’re pregnant and you do get sick, you have to balance your treatment options with the risks. Here are some common questions from soon-to-be mamas with guidance on coughs.

Can pregnancy itself make you cough?

In some cases, yes! Your body is adjusting to some big changes. Your heart and blood vessels are working a lot harder. Your lungs and airways are adapting to increased pressure and your growing abdomen. Acid reflux and the associated heartburn can irritate your throat. All of these factors can lead to a cough.

Can a cough cause miscarriage?

A cough itself will not cause miscarriage [1]. But a cough can be a symptom of flu or another infection that could be dangerous to you or the baby. It’s a good idea to investigate why you’re coughing to rule out something serious.

Can I take cough suppressant medications?

Don’t take any over-the-counter medications without consulting your doctor, even everyday meds you’re used to taking year-round. Any of them might have adverse effects, so it’s best to be cautious.

How about expectorants? Are they dangerous to take during pregnancy?

Yes, many expectorants can be dangerous. These phlegm-thinning drugs can cause pregnancy complications and must be very carefully selected by a doctor to balance the risk to baby and the benefit to you, depending on your condition. It’s better to use non-drug alternatives such as moisturizing nasal sprays, room humidifiers, and drinking plenty of fluids [2].

If I have a cold, will breathing hot steam help?

Studies have not confirmed the effectiveness of steam inhalation therapy in the treatment of colds [3]. A recent EU study led to guidelines that ban recommendations of steam inhalation therapy from patient brochures and medical protocols, as the potential dangers far outweigh the unproven benefits. Steam is considered the most traumatic and least effective treatment [4]. We don’t recommend breathing steam for a cold.

Could my cough be asthma?

Asthma is a common condition, and sometimes its only symptom is a dry, unproductive cough. If your dry cough persists for more than two weeks, it might be asthma [5]. If you have developed asthma during pregnancy, or if it was first diagnosed then, you will likely want to treat it; doing nothing might be more harmful than any drug side effects.


Frequently asked questions

Yes, pregnancy itself can cause coughing due to increased pressure on your lungs from your growing abdomen, acid reflux, and your cardiovascular system working harder. These natural changes in your body can lead to throat irritation and coughing.

You should never take over-the-counter cough medications without consulting your doctor first during pregnancy. Many cough suppressants and expectorants can cause pregnancy complications and may harm your baby.

Coughing itself will not cause a miscarriage. However, a persistent cough could be a symptom of flu or other infections that might be dangerous to you or your baby, so it's important to identify the underlying cause.

Safe, natural remedies include using room humidifiers, moisturizing nasal sprays, and drinking plenty of fluids to thin mucus. Avoid steam inhalation therapy, as studies show it's ineffective and potentially dangerous.

See your doctor if you have a persistent dry cough lasting more than two weeks, as it could indicate asthma. Also consult your healthcare provider if your cough is accompanied by fever or other concerning symptoms.

Medical Disclaimer

This article is for informational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or qualified health provider with any questions you may have regarding a medical condition.

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Reviewed by healthcare professionals · Updated March 25, 2025

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