Stethoscope on wood with Morning Sickness words as medical concept
Lemau Studio/

Pregnancy can bring a lot of joy… and a lot of unpleasant symptoms. One of the most common? Morning sickness. Estimates vary, but anywhere from 50% to 75% of pregnancies produce morning sickness. Considering how widespread this condition is, it pays to know more about it — including its symptoms.

What are the symptoms of morning sickness?

There are plenty of subtle signs of morning sickness, including the following…

9. Nausea

Husband is consoling his wife because she feel nausea.Morning sickness

Nausea is the hallmark sign of morning sickness. Many liken the experience to motion sickness, such as feeling queasy after a car ride.

When does it occur?

Despite the name, morning sickness can occur at any time; it’s simply named so because this nausea tends to hit in the morning. It typically occurs in the first trimester, although some people experience it for longer.

Many times, morning sickness has no triggers. Other times, however, there are clear triggers for this condition…

8. Nausea After Experiencing Heat and Humidity

Exhausted white woman in the summer heat
Juergen Faelchle/

Many times, morning sickness appears without any seeming trigger. Other times, overheating or living in a humid climate can trigger this queasy condition. Considering basal body temperature tends to rise a little during pregnancy, expectant individuals need to take special precautions to avoid overheating.

Nausea can exist as a queasy feeling on its own, although sometimes it is followed by the following…

7. Vomiting

Young asian pregnant woman feel sick on bed in the room and husband holding a glass of water for take care of pregnant wife.
smile photo/

Vomiting does not always occur in morning sickness, although it can happen.

Is vomiting a sign for concern?

In most cases, mild nausea and occasional vomiting is no cause for alarm; it’s simply an unpleasant side effect of fluctuating pregnancy hormones. However, when nausea and vomiting become so severe that someone cannot eat, it’s time to see a medical provider. Those who vomit blood need to seek emergency medical attention right away.

Nausea and vomiting are well-known signs of morning sickness, and are often accompanied by the following…

6. Aversion to Certain Foods

Young african american woman having healthy breakfast in the morning at home feeling unwell and coughing as symptom for morning sickness. Healthcare concept.

Food can be a source of comfort and delight. With morning sickness, though, sometimes certain foods or even smells can induce queasiness.

What foods trigger morning sickness?

Every individual can experience individual triggers. However, spicy foods and high-sugar foods are often the culprits behind queasiness during pregnancy. Sometimes someone doesn’t even need to eat or smell the food to become queasy. For some people, simply thinking about a certain food can make them queasy.

Morning sickness is also often accompanied or preceded by the following…

5. Excess Saliva Production

young adult white woman holding hand over her mouth over grey background

Some people report excessive salivation (ptyalism gravidarum) during their pregnancies. It’s important to note that excessive salivation is often reported with morning sickness, and is not necessarily a symptom of the condition itself. However, excessive amounts of saliva can trigger queasiness during pregnancy.

While excessive salivation is annoying, it’s typically harmless. The same cannot be said of the following symptoms of morning sickness…

4. Faintness

Sad latin girl complaining looking down sitting on the beach feeling lightheaded from pregnancy
Pheelings media/

Morning sickness is typically benign, albeit annoying. When morning sickness induces feelings of faintness or dizziness, though, it’s time to see a doctor.

Why does this sensation occur?

There are several reasons why someone might feel faint or dizzy during pregnancy. When it’s related to morning sickness, it’s typically due to a drop in blood sugar thanks to excessive nausea and vomiting.

3. Racing Heart

Heart palpitations. Portrait of worried brunette asian young woman in casual blue denim jacket with makeup standing and feeling pain on her heart. indoor studio shot, isolated on light grey background.

A racing heart or experiencing heart palpitations can be a cause for concern during pregnancy.

What do palpitations feel like?

People often describe these sensations as having a heart that is:

  • Fluttering
  • Missing a beat
  • Pounding
  • Racing

What causes heart palpitations during pregnancy?

There are many reasons why someone can experience palpitations during pregnancy, including relatively benign ones such as having negative reactions to certain foods and drinks. Other times, a racing heart can indicate serious problems like preeclampsia.

Anyone who experiences these sensations should consult with their medical provider to determine the cause of their palpitations and rule out more serious conditions.

Those whose morning sickness is severe can also experience the following…

2. Can’t Keep Liquids Down

Dissatisfied Woman Looking into Glass of Water

Severe morning sickness is known as hyperemesis gravidarum. One potential side effect of this condition is being unable to keep any liquids down due to excessive nausea and/or vomiting.

Is this symptom a sign of concern?

Yes. Anyone experiencing this symptom should contact their medical provider, as not being able to keep liquids down can lead to negative consequences, including dehydration.

Another sign of severe morning sickness that requires medical attention is the following…

1. Passing Small Amounts of Urine

Closeup photo of white  woman sitting on toilet and using toilet paper

Passing small amounts of urine or urine that is dark in color can indicate that something with the pregnancy is wrong, such as dehydration. Given the potential harm to both parent and fetus, it’s important for those with this symptom to seek medical care.

What are the signs of dehydration?

Signs of dehydration include:

  • Intense thirst
  • Dizziness
  • Dry skin
  • Fatigue
  • Headaches
  • Having a dry mouth or “cotton” mouth
  • Reduced sweat and urine output

Final thoughts

As you can see, experiencing morning sickness can be more than simply feeling queasy. While oftentimes this condition is harmless, severe cases require medical attention. Anyone who has concerns about their pregnancy—including morning sickness—should talk with their medical providers.

Disclaimer: this article does not constitute or replace medical advice. If you have an emergency or a serious medical question, please contact a medical professional or call 911 immediately. To see our full medical disclaimer, visit our Terms of Use page.

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