Morning Sickness (Pregnancy Nausea)
Sources consulted
This article is original patient-education content.
- WHO—Health topics A–Z(2024)
- NHS—Health A to Z(2024)
- CDC—Health topics(2024)
Based on international clinical guidelines
Overview
Morning sickness is nausea and vomiting that many people feel during early pregnancy. Despite its name, it can happen at any time of day or night. It is usually a normal sign of a healthy pregnancy and often gets better after the first 12 weeks. In some cases it can be severe, and that is called hyperemesis gravidarum (a medical condition with extreme nausea and vomiting).
Key facts
- Morning sickness affects about 70 to 80 out of every 100 pregnant people.
- It usually starts around the 6th week of pregnancy and gets better by weeks 12 to 16.
- Mild morning sickness does not harm you or your baby.
- Severe morning sickness needs medical attention to prevent dehydration and other problems.
Yes, morning sickness is very common. Most pregnant people experience some nausea or vomiting during their first trimester.
Morning sickness can affect anyone who is pregnant, but it is more common in younger pregnant people, those expecting twins or more, and those who have had morning sickness in a previous pregnancy.
Symptoms
- You cannot keep any fluids down for 24 hours or more
- You feel very dizzy, faint, or confused
- Your heart is racing or you feel short of breath
- You have severe pain in your belly
- You are passing very little urine or none at all
- ⚠You are vomiting blood
- ⚠Your vomit looks like coffee grounds
- ⚠You have lost weight
- ⚠Your skin or eyes look yellow
- ⚠You have a fever with vomiting
Common symptoms
- Feeling sick (nausea) that comes and goes or is constant
- Vomiting or retching
- Feeling worse with certain smells, foods, or when you are tired
- Loss of appetite
Causes
Main causes
- Rising levels of human chorionic gonadotropin (hCG), a pregnancy hormone
- Increased levels of estrogen and other hormonal changes
- A more sensitive stomach or digestive system during pregnancy
- Genetics – if your mother or sister had morning sickness, you may too
Risk factors
- Being pregnant with twins, triplets, or more
- A history of morning sickness in earlier pregnancies
- A history of motion sickness or migraines
- Being under 25 years old
When to see a doctor
See a doctor urgently if:
- You cannot keep even sips of water down for 24 hours
- You have signs of dehydration (dry mouth, dark urine, feeling very thirsty)
- You vomit blood or have severe belly pain
Book a routine appointment if:
- The nausea and vomiting are making it hard to eat or drink
- You are losing weight
- You want help managing your symptoms
Diagnosis
Your doctor or midwife will ask about your symptoms and how often you are sick. They may also check your pulse, blood pressure, and weight to see if you are dehydrated.
Tests that may be done
- A urine test to check for ketones (a sign of dehydration)
- Blood tests to check your electrolytes (minerals in your blood)
- An ultrasound may be done to confirm the pregnancy and check if there is more than one baby
What to expect at your appointment
Morning sickness is usually diagnosed based on your symptoms. If your doctor suspects hyperemesis gravidarum, they may suggest further tests. Most people get a diagnosis at their first prenatal visit or when they seek help for severe symptoms.
Treatment
For most people, morning sickness can be managed with simple lifestyle changes. If symptoms are severe, your doctor may recommend medical treatments. The goal is to keep you hydrated and nourished so you and your baby stay healthy.
Self-care at home
- Eat small, frequent meals every two to three hours
- Keep dry crackers or plain biscuits by your bed and eat one before getting up
- Drink plenty of fluids, like water or ginger tea, in small sips
- Avoid strong smells, spicy or greasy foods
- Try ginger (in tea, sweets, or capsules) or acupressure bands for nausea
- Rest when you can and get fresh air
Medical treatments
If self-care is not enough, your doctor may prescribe anti-sickness medications that are safe to use in pregnancy. They may also recommend vitamin B6 alone or combined with other substances. In severe cases, you may need fluids and medicines given through a vein in hospital. Always talk to your healthcare provider before taking any medicine or supplement while pregnant.
Living with this condition
Morning sickness can be exhausting, but it usually gets better. Try to plan your day to avoid triggers like strong food smells. Eat small meals often and keep snacks handy. Drink liquids between meals rather than with them.
Lifestyle tips
- Get plenty of rest – fatigue can make nausea worse
- Avoid cooking or being in the kitchen when food smells bother you
- Ask for help from family or friends with meals and chores
- Keep a food diary to see which foods or smells trigger your symptoms
Diet and exercise
Eat what appeals to you, even if it is plain and bland. Good choices are crackers, toast, rice, bananas, and clear soups. Avoid fatty or spicy foods. Stay hydrated with water, clear broth, or oral rehydration solutions. Light exercise like walking can help, but only if you feel up to it.
Mental health and emotional wellbeing
Constant nausea and vomiting can make you feel frustrated, anxious, or low. It is normal to feel this way. Talk to your partner, midwife, or doctor about your feelings. Severe morning sickness can be very hard to cope with, and you deserve support.
Prevention
Morning sickness cannot always be prevented, but some people find that eating small frequent meals, taking prenatal vitamins before and during early pregnancy, and avoiding strong triggers can help reduce the severity. However, it is a normal part of pregnancy for many.
Complications
If left untreated
- Dehydration and electrolyte imbalance (loss of important minerals)
- Weight loss and malnutrition
- Difficulty gaining enough weight for a healthy pregnancy
- Hyperemesis gravidarum – a severe form that may require hospital treatment
Long-term outlook
The good news is that for most people, morning sickness goes away by week 16 and does not harm the baby. Even in severe cases, treatments are very effective. With proper care, you and your baby can be healthy.
Find support
International organisations
Local organisations
- NHS (UK) ↗ · United Kingdom
Helplines
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Always verify with your doctor
Health guidelines vary by country and region. The information in this article is based on international clinical guidelines but may not reflect the specific guidelines, medications, or practices in your country. Always discuss your health concerns with your own doctor or healthcare provider, and refer to your local national health guidelines where available.
Important notice This information is for educational purposes only. It does not replace professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider about your specific situation. If you are experiencing a medical emergency, call your local emergency services immediately.