How early can you start feeling nauseous when pregnant

Nausea and vomiting in pregnancy, often known as morning sickness, is very common in early pregnancy.

It can affect you at any time of the day or night or you may feel sick all day long.

Morning sickness is unpleasant, and can significantly affect your day-to-day life. But it usually clears up by weeks 16 to 20 of your pregnancy and does not put your baby at any increased risk.

There is a chance of developing a severe form of pregnancy sickness called hyperemesis gravidarum. This can be serious, and there's a chance you may not get enough fluids in your body (dehydration) or not get enough nutrients from your diet (malnourishment). You may need specialist treatment, sometimes in hospital.

Sometimes urinary tract infections (UTIs) can also cause nausea and vomiting. A UTI usually affects the bladder, but can spread to the kidneys.

Non-urgent advice: Call your midwife, GP or 111 if:

you're vomiting and:

  • have very dark-coloured urine or have not had a pee in more than 8 hours
  • are unable to keep food or fluids down for 24 hours
  • feel severely weak, dizzy or faint when standing up
  • have tummy (abdominal) pain
  • have a high temperature
  • vomit blood
  • have lost weight

Treatments for morning sickness

Unfortunately, there's no hard and fast treatment that will work for everyone’s morning sickness. Every pregnancy will be different.

But there are some changes you can make to your diet and daily life to try to ease the symptoms.

If these do not work for you or you're having more severe symptoms, your doctor or midwife might recommend medicine.

Things you can try yourself

If your morning sickness is not too bad, your GP or midwife will initially recommend you try some lifestyle changes:

  • get plenty of rest (tiredness can make nausea worse)
  • avoid foods or smells that make you feel sick
  • eat something like dry toast or a plain biscuit before you get out of bed
  • eat small, frequent meals of plain foods that are high in carbohydrate and low in fat (such as bread, rice, crackers and pasta)
  • eat cold foods rather than hot ones if the smell of hot meals makes you feel sick
  • drink plenty of fluids, such as water (sipping them little and often may help prevent vomiting)
  • eat foods or drinks containing ginger – there's some evidence ginger may help reduce nausea and vomiting (check with your pharmacist before taking ginger supplements during pregnancy)
  • try acupressure – there's some evidence that putting pressure on your wrist, using a special band or bracelet on your forearm, may help relieve the symptoms

Find out more about vitamins and supplements in pregnancy

Anti-sickness medicine

If your nausea and vomiting is severe and does not improve after trying the above lifestyle changes, your GP may recommend a short-term course of an anti-sickness medicine, called an antiemetic, that's safe to use in pregnancy.

Often this will be a type of antihistamine, which are usually used to treat allergies but also work as medicines to stop sickness (antiemetic).

Antiemetics will usually be given as tablets for you to swallow.

But if you cannot keep these down, your doctor may suggest an injection or a type of medicine that's inserted into your bottom (suppository).

See your GP if you'd like to talk about getting anti-sickness medication.

Risk factors for morning sickness

It's thought hormonal changes in the first 12 weeks of pregnancy are probably one of the causes of morning sickness.

But you may be more at risk of it if:

  • you're having twins or more
  • you had severe sickness and vomiting in a previous pregnancy
  • you tend to get motion sickness (for example, car sick)
  • you have a history of migraine headaches
  • morning sickness runs in the family
  • you used to feel sick when taking contraceptives containing oestrogen
  • it's your first pregnancy
  • you're obese (your BMI is 30 or more)
  • you're experiencing stress

Visit the pregnancy sickness support site for tips for you and your partner on dealing with morning sickness.

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Video: how can I cope with morning sickness?

In this video, a midwife gives advice on how to deal with morning sickness during your pregnancy.

Media last reviewed: 27 February 2017
Media review due: 27 March 2020

  • What Is Morning Sickness?
    • What is morning sickness?
  • Signs and Symptoms
    • Signs and symptoms of morning sickness
  • Causes
    • Causes of morning sickness
  • When to See a Doctor
    • When to see the doctor for morning sickness
  • Diagnosis
    • Diagnosing morning sickness
  • Treatments
    • Treatments for morning sickness
  • Related Resources
    • Related Resources - How Soon Can You Get Morning Sickness?

What is morning sickness?

How early can you start feeling nauseous when pregnant

Morning sickness is a common side effect in pregnancy. Morning sickness occurs in the first trimester and can be an early sign of pregnancy.

Morning sickness is a common side effect of pregnancy. Sometimes you can get morning sickness before you know you are pregnant. Typically, morning sickness starts in the sixth week of pregnancy which is about two weeks after your first missed period. About 70% of women experience morning sickness in their first trimester of pregnancy.

A common misconception about morning sickness is due to its name. Morning sickness can actually occur during any time of day. Morning sickness has been described to feel like seasickness. While it starts as early as the sixth week, it usually goes away by the 12th or 14th week, once you’ve reached the second trimester.

Morning sickness is caused by changing hormone levels and a heightened sense of smell. This can cause you to develop an aversion to certain scents and smells. Morning sickness can linger throughout the first trimester, making you feel constantly queasy, triggered by specific smells.

Signs and symptoms of morning sickness

Morning sickness occurs in the first trimester and can be an early sign that you are pregnant. When you get morning sickness, it can last and occur longer than just the morning. Common symptoms of morning sickness include: 

Nausea and queasiness

Nausea is the main symptom of morning sickness. It can occur after you eat, when you smell specific scents, or remain throughout the day. Sometimes your nausea and queasiness can be so strong, usually in the morning, that it leads to vomiting. 

Aversions to certain smells

Some scents may seem so powerful to you that they become overwhelming and can lead to nausea or vomiting. This can be food, perfume, or other strong scents. This is unique to each person and will develop as your pregnancy progresses. 

Seasick feeling

Before you know that you’re pregnant, you might not understand why you are feeling seasick or carsick. This feeling may also be accompanied by hunger pains. 

Causes of morning sickness

Morning sickness is a side effect of pregnancy but not all women get morning sickness and not all morning sickness occurs in the morning. Doctors do not know specifically what causes morning sickness but they do suspect some causes, such as: 

Hormones

Doctors believe that the increase of hormones can cause morning sickness. The pregnancy hormone hCG reaches its highest level when morning sickness is at its worst. The increase of estrogen and progesterone can also make it hard for your body to digest food properly.

Sensitivity 

Some people are more sensitive to nausea and an upset stomach which can make them more likely to have vomiting during pregnancy. If you have a sensitive stomach, you are more likely to experience morning sickness in your first trimester than those who don’t have a sensitive stomach. 

Stress

Emotional stress can cause gastrointestinal problems, and when you are pregnant, you are more prone to morning sickness when you are stressed. 

When to see the doctor for morning sickness

Morning sickness is a normal part of early pregnancy. There are methods of coping you can do at home. But if you are vomiting and your morning sickness is accompanied by the following symptoms you should schedule an appointment with your doctor immediately:

  • Dark-colored urine or have not peed in more than 8 hours
  • Blood or pain when you pee
  • Unable to keep food or fluids down for 24 hours
  • Feel weak, dizzy, or faint when standing up
  • Abdominal pain
  • Weight loss

These may be signs of a urine infection or dehydration and should be treated quickly. 

Diagnosing morning sickness

If you feel like you’re going to vomit or are vomiting constantly and visit your doctor, they will diagnose you with morning sickness. They do not need to run tests to determine you have morning sickness. If you have morning sickness before you know you are pregnant the doctor may run a blood test to confirm your pregnancy.

Treatments for morning sickness

Morning sickness will usually go away on its own after your first trimester of pregnancy. There are treatments you can do at home to alleviate your nausea and reduce the morning sickness. These remedies include: 

  • Taking prenatal vitamins
  • Vitamin B6
  • Eating small meals throughout the day to ease digestion
  • Avoiding spicy or greasy meals
  • Getting plenty of rest
  • Drinking plenty of fluids
  • Pregnancy supplements

If your morning sickness is severe, you can talk to your doctor about Food and Drug Administration (FDA) approved medication for reducing nausea during pregnancy. Do not take medication during pregnancy unless it has been approved by your doctor. 

How early can you start feeling nauseous when pregnant

SLIDESHOW

16 Early Signs & Symptoms of Pregnancy: Could You Be Pregnant? See Slideshow

Medically Reviewed on 1/22/2021

References

SOURCES:

The American College of Obstetricians and Gynecologists: "What causes morning sickness (nausea and vomiting during pregnancy)?"

American Family Physician: "Nausea and Vomiting of Pregnancy."

American Pregnancy Association: "Morning Sickness Remedies."

FamilyDoctor.org: "Morning Sickness."

Frontiers in Psychology: "Pregnancy and olfaction: A review."

Health Partners: "Morning sickness: When does it start and what can I do about it?"

NHS: "Vomiting and morning sickness in pregnancy."

Sanford Health: "How to enjoy, not just endure, morning sickness."

Can you feel sick as early as 1 week pregnant?

Pregnancy symptoms in week 1 Other early pregnancy symptoms include: nausea with or without vomiting. breast changes including tenderness, swelling, or tingling feeling, or noticeable blue veins. frequent urination.

How can I tell if Im pregnant after 1 week?

The first signs of pregnancy won't occur right away—in fact, many women miss their period at week 4 before they begin to feel “different.” But some common early signs of pregnancy in the first weeks after fertilization include breast soreness or tenderness, nausea, fatigue and the frequent urge to pee.

How quickly does nausea start with pregnancy?

If you're one of the many pregnant women who experience morning sickness, you may start feeling nauseous somewhere around the sixth week of your pregnancy, typically two weeks after your first missed period. Symptoms may appear gradually or seem to happen overnight.