Pregnancy Nausea: Why It Happens and What Really Helps

The alarm goes off and, before you even open your eyes, the queasiness is there. Your husband's coffee turns your stomach, the smell of frying sends you running from the kitchen. Pregnancy nausea is one of the most common signs of early pregnancy, and sometimes one of the most draining.

The good news: it is almost always temporary, and several simple habits bring real relief. Here is why it happens, how long it lasts, what works, and when you need to see a doctor.

Why do you feel sick when you are pregnant?

Specialists put it down to the hormonal upheaval of the first weeks. The Mayo Clinic points in particular to the pregnancy hormone (hCG), which is higher in women with severe nausea or expecting twins, and to oestrogen. The name “morning sickness” is misleading: it can strike at any time of day.

Some women are more prone to it. The UK's NHS mentions in particular:

• a multiple pregnancy;
• severe sickness in a previous pregnancy;
• travel sickness or migraines;
• a family history of pregnancy sickness;
• nausea when taking a pill containing oestrogen;
• a first pregnancy, or a BMI of 30 or more.

A urinary tract infection can also cause nausea and vomiting: mention any burning when you pass urine.

How long does pregnancy nausea last?

Usually a few weeks, rarely the whole pregnancy. The milestones vary a little between sources:

Nausea even has a reassuring side: according to the Mayo Clinic, women who have it in the first trimester have fewer miscarriages. But not having it is no cause for concern either. To place these weeks in context, see our article on the first symptoms of pregnancy.

What really helps

There is no miracle cure, but health authorities recommend a series of measures that work well together.

1. Nibble before you get up. A plain biscuit, a piece of toast or a cracker left on the bedside table, then get up slowly.
2. Eat little but often. The NHS recommends plain foods high in carbohydrate and low in fat: bread, rice, pasta, crackers. Don't leave your stomach empty for long.
3. Choose cold food. If the smell of hot dishes bothers you, cold food often goes down better.
4. Drink between meals, in small sips. Drinking little and often helps prevent vomiting. An insulated bottle that keeps water cool goes everywhere with you.
5. Steer clear of trigger smells, even ones you used to love.
6. Rest. Tiredness makes nausea worse: a nap is better than one more effort.
7. Try ginger, in cooking or as an infusion: the NHS notes that some evidence suggests it helps. For a capsule supplement, ask your pharmacist first.
8. Try acupressure. Wristbands that press on a point on the wrist are mentioned by both the NHS and the INSPQ.

Your doctor may also talk to you about vitamin B6, mentioned by UNICEF and the Mayo Clinic. Don't take anything without their advice or your pharmacist's: they will tell you which product and dose are right for you.

Cooking smells, heat, Ramadan: everyday situations

Family cooking. When harira (the traditional Moroccan soup) is simmering or oil is sizzling, the smell alone can set off the nausea. Hand over the stove if you can, open the windows wide, and put together cold meals: yoghurt, fresh cheese, bread, fruit, salads.

The heat. During heatwaves, or on a day of chergui (the hot, dry wind from the desert), vomiting makes you lose even more water. Keep cool water within reach and watch the colour of your urine: dark urine is a sign you are not drinking enough.

Work. The Mayo Clinic suggests keeping crackers at the office, avoiding the smells of the break room and taking short regular breaks.

Ramadan. Fasting while you are vomiting puts you at risk of dehydration. If early pregnancy falls during the holy month, talk to your doctor before deciding, and read our article on Ramadan during pregnancy.

To put together meals that go down well without neglecting the needs of pregnancy, see also our guide to eating well when you are pregnant.

Hyperemesis gravidarum: when nausea becomes an illness

In about 1 to 3 pregnant women in 100, according to NHS Wales, the vomiting is so severe that it prevents eating and drinking. This is hyperemesis gravidarum. It differs from ordinary nausea by:

• prolonged, severe vomiting;
• dehydration: thirst, dizziness, dark urine;
• weight loss;
• blood pressure that drops when you stand up;
• symptoms that do not always improve around 16-20 weeks.

It is not a whim or a lack of willpower. Treatments that are safe in pregnancy exist: anti-sickness medicines, vitamins, and sometimes a hospital stay for a drip. The earlier they start, the better they work. When properly treated, hyperemesis is unlikely to harm the baby.

Medicines: never without advice

If nausea stops you from living normally despite these measures, your doctor can prescribe a short course of anti-sickness treatment that is safe in pregnancy. Don't take any medicine on your own initiative, even over the counter: ask your doctor or pharmacist for the right product and dose.

To rest during the day and get a little energy back, a pregnancy pillow helps you settle comfortably on your side. Our article on common pregnancy discomforts also covers heartburn, which sometimes takes over from nausea.

From the shop

A little support for the difficult weeks

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Products sold by La Maison du Bébé, publisher of this magazine. Prices as of 12 October 2026; please check the product page.