Morning sickness
Why nausea and vomiting happen in pregnancy, when they ease, what helps and when to call a doctor.
3 min read
First trimester
Week 10 of pregnancy
Your baby is the size of a strawberry and is now called a fetus. All the main organs have formed and will now grow and mature.
Your baby is the size of a strawberry
- Length, head to bottom
- ≈ 3.1 cm
- Weight
- ≈ 4 g
Your baby this week
- From this week the embryo is called a fetus: the main organs are in place and keep maturing.
- Fingers and toes have separated and nails begin to form.
- Under the gums, the buds of the milk teeth form.
- The baby moves its arms and legs and can bend its head.
Your body this week
- Your blood volume is rising, so veins on your breasts and tummy may show more.
- Tiredness and nausea may carry on, but they usually start to ease over the coming weeks.
- Some women feel dizzy, especially when getting up quickly.
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Read more for this stage
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When to see a doctor once you know you are pregnant, what happens at the first appointment and what the check-ups look like until the birth.
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Early signs of pregnancy
A missed period, tiredness, sore breasts and nausea: how to recognise the early signs, when to take a test and when to see a doctor.
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General information written by the mam.al editors. Every pregnancy is different and sizes are averages; it does not replace advice from your doctor or midwife. Sources include the NHS week-by-week guide to pregnancy. NHS. Contains public sector information licensed under the Open Government Licence v3.0.