Nausea during pregnancy can feel both surprising and stressful – especially if you don't know what's "normal." Many people experience a period of morning sickness in the first trimester, but when it starts varies from person to person. Here's a practical, fact-based guide to typical onset, duration, what you can do yourself, and when you should contact a doctor.

For many, nausea during pregnancy begins around gestational week 6, but some notice it earlier (e.g., around week 4-5), and others only later. This is due to the body's rapid hormonal changes at the beginning of pregnancy, and the increased sensitivity to smells, tastes, and blood sugar fluctuations.

Typical patterns, often mentioned in patient information and midwife advice, look like this:

• Week 4-5: Some experience the first signs, such as food aversion or increased sensitivity to smells.
• Around week 6: Many experience more pronounced nausea.
• Week 8-10: For many, symptoms peak.
• Week 12-14: For many, it starts to ease.
• Week 20 and beyond: Some may still have nausea, but persistent or worsening symptoms should be evaluated.

The duration varies, but for many, nausea is most pronounced in the first trimester and gradually subsides thereafter. It's also common for nausea to come in waves: some days are significantly worse than others, without necessarily meaning that something is wrong.

Write down for 3-5 days:

• When the nausea is worst during the day
• What triggers it (smell, empty stomach, specific foods)
• Whether you can keep fluids and food down

This makes it easier to choose specific strategies – and helps your doctor or midwife if you need an assessment.

There isn't one single explanation, and two pregnant individuals can experience completely different courses. Sensitivity to hormonal changes, stress levels, sleep, and frequent drops in blood sugar can play a role. Some also find that nausea is worsened by strong smells, hot dishes, fatty foods, or long breaks between meals.

Early, late, mild, or severe nausea can occur – and variation itself is common. The crucial thing is how you feel overall, and whether you can get enough fluids and nutrition.

The goal is typically to avoid an empty stomach, stabilize energy, and minimize triggers. Try, for example:

• Small, frequent meals (e.g., every 2-3 hours)
• Something dry before you get up (crackers or toast by the bed)
• Colder and milder food if smells trigger nausea
• Small sips of fluid often, especially if you are vomiting
• A calm start to the day and breaks as needed

If you are considering over-the-counter preparations or supplements for nausea, clarify this with your doctor or midwife, as recommendations may depend on your situation.

Seek an assessment if you experience signs that your body is not getting enough fluids or nutrients, or if the nausea becomes so severe that you cannot function in daily life.