Morning Sickness
Nausea and vomiting in early pregnancy. Despite the name, it can happen at any time of day.
Quick Summary
Nausea, vomiting, food aversions and tiredness, usually in the first 12–16 weeks.
Small frequent meals, fluids, rest, ginger, and medicines if needed. Severe cases need hospital care.
First pregnancy, twins, previous morning sickness and family history.
Overview
Morning sickness is common and is thought to be linked to pregnancy hormones.
Severe, persistent vomiting (hyperemesis gravidarum) can cause dehydration and weight loss and needs medical treatment.
Symptoms
Nausea
Often worse in the morning.
Vomiting
Sometimes several times a day.
Tiredness
Common in early pregnancy.
Severe signs
Unable to keep fluids down, dark urine or dizziness: see a doctor.
Causes & Risk Factors
Biological Causes
Hormonal changes of pregnancy, especially hCG.
Key Risk Factors
- Twins Higher hormone levels.
- History Previous severe sickness.
- Family history Mother or sister had it.
Management & Treatment
01. Eating habits
Small, frequent, bland meals and plenty of fluids.
02. Rest
And avoiding triggers such as strong smells.
03. Medicines
Anti-sickness medicines safe in pregnancy if needed.
Frequently Asked Questions
Does it harm the baby?
When does it stop?
Sources and further reading
Last updated 21 October 2026. For more detail, see these trusted health organisations.