Week by Week Pregnancy: 8 Week Pregnant

At 8 weeks pregnant, your embryo may measure around 16 millimetres from head to bottom and is roughly the size of a raspberry. The brain continues to develop rapidly, facial features are becoming more defined, and the arms and legs are growing longer. The areas that will form the hands, feet, fingers and toes are also continuing to take shape.

You may still be experiencing common first-trimester symptoms such as nausea, tiredness, breast tenderness, frequent urination and a heightened sense of smell. Although your uterus is growing, most women will not have an obvious pregnancy bump at 8 weeks.

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Contents

• What Does 8 Weeks Pregnant Mean?
• Your Baby's Development at 8 Weeks
• How Are the Face, Hands and Feet Developing?
• What's Happening in Your Body?
• What Can You See on an Ultrasound at 8 Weeks?
• 8 Weeks Pregnant Symptoms
• Frequently Asked Questions

8 Weeks Pregnant at a Glance

Key takeaway this week
During week 8, your baby's basic body shape becomes increasingly recognisable. The head and face continue developing, the arms and legs grow longer, and the areas that will eventually become the hands, feet, fingers and toes continue to take shape.

What Does 8 Weeks Pregnant Mean?

Week 8 is a period of remarkably rapid embryonic development. Your baby is still very small, but many of the basic structures of the body are becoming easier to distinguish than they were only a week or two ago.

The head remains proportionally large compared with the rest of the body, partly because the brain is developing so quickly. Facial structures continue to form while the arms and legs become longer and more defined.

Development of the internal organs is also continuing. The heart supports the developing circulation while the brain and nervous system become increasingly complex. The lungs, liver, kidneys and digestive system are also undergoing early development.

Evidence-based insight
Growth is extremely rapid during early pregnancy. A difference of only a few days in developmental age can therefore affect measurements taken during an ultrasound scan. Your healthcare professional may consider both your pregnancy dates and ultrasound measurements when assessing gestational age.

Your Baby's Development at 8 Weeks

Your baby's brain and nervous system continue developing rapidly during week 8. The head remains relatively large as different areas of the brain continue to develop and become more complex.

The arms are longer than they were last week, and the developing elbows begin to become more apparent. The areas that will form the hands become more distinct, while the legs and developing feet continue to grow.

Important changes are also taking place in the face. The eyes continue developing and early eyelid structures become more noticeable. The nose and upper lip are taking shape, while the areas that will form the outer ears continue developing.

The internal organs are not yet mature. However, the heart, brain, liver, kidneys and digestive system are all continuing through important stages of early development.

Did you know?
Although your baby is only around 1.5 centimetres long, the brain, facial structures, arms, legs and major internal organ systems are all developing at the same time.

How Are the Face, Hands and Feet Developing?

The limb buds that became more noticeable during week 7 continue changing shape during week 8. The arms grow longer and the areas where the elbows will develop become more apparent. The hands do not yet look like fully formed hands, but the regions that will eventually develop into the fingers are beginning to take shape.

The legs also continue growing, while the areas that will form the feet become more defined. The fingers and toes are not yet fully separated, but their development will become increasingly noticeable over the coming weeks.

Facial development is progressing just as quickly. The developing eyes, eyelids, nose, upper lip and outer ear structures gradually give the head a more recognisable appearance.

Development note
Your baby's hands and feet are developing rapidly, but the fingers and toes are not yet completely separated. Their appearance will become much more distinct over the next few weeks.

What's Happening in Your Body?

At 8 weeks pregnant, your uterus continues to grow, although most women will not yet have an obvious pregnancy bump. Hormonal changes can cause bloating, however, so you may notice that your abdomen feels fuller or that clothes fit more tightly around your waist.

Higher progesterone levels can slow the digestive system, which may contribute to constipation and bloating. Nausea and food aversions can also affect what and how much you feel able to eat.

Your breasts may continue to feel tender or become larger as your body prepares for pregnancy and breastfeeding. Tiredness, frequent urination, changes in smell and taste, and emotional changes are also common during the first trimester.

Coming up next
In Part 2, we'll look at what may be visible on an ultrasound at 8 weeks, how your baby's measurements are assessed, common pregnancy symptoms, ways to manage nausea and digestive changes, nutrition and what to expect from first-trimester antenatal care.

What Can You See on an Ultrasound at 8 Weeks?

At 8 weeks pregnant, the embryo can usually be seen clearly on an ultrasound scan and cardiac activity can generally be identified. The embryo's crown-rump length (CRL) may also be measured to help assess gestational age and early development.

The head remains proportionally large compared with the body, while the arms and legs are becoming more distinct. Depending on the quality and type of scan, the embryo's curved body shape and developing limbs may also be visible.

A transvaginal ultrasound scan can provide clearer images than an abdominal scan during early pregnancy. However, not everyone needs an ultrasound at 8 weeks. The timing of an early scan depends on your individual circumstances and the advice of your healthcare professional.

Good to know
Your baby's measurement does not need to match an online average exactly. At this stage, even a difference of a few days in developmental age can affect ultrasound measurements. Your healthcare professional will interpret the findings in the context of your pregnancy dates and the scan as a whole.

How Big Is Your Baby at 8 Weeks Pregnant?

At 8 weeks, the embryo may measure around 16 millimetres from head to bottom. During early pregnancy, this measurement is known as the crown-rump length (CRL).

CRL is measured from the top of the embryo's head to the bottom of the torso. The developing legs are not included, so it should not be interpreted as your baby's complete head-to-toe length.

Because growth is particularly rapid during these early weeks, measurements can vary noticeably even between pregnancies that are only a few days apart.

Development note
A single measurement should not be interpreted in isolation. Your healthcare professional will consider the CRL alongside your pregnancy dates and other ultrasound findings.

8 Weeks Pregnant Symptoms

At 8 weeks pregnant, first-trimester symptoms such as nausea, tiredness, breast tenderness and frequent urination may continue. Some women experience several noticeable symptoms, while others have relatively few.

Changes in taste and smell can make certain foods suddenly unpleasant, and you may notice a metallic taste in your mouth. Hormonal changes can also affect your mood and make you feel more emotional than usual.

Bloating and constipation may become noticeable too, as hormonal changes can slow the digestive system.

Evidence-based insight
Pregnancy symptoms vary considerably between women and between different pregnancies. The number or intensity of symptoms cannot, on its own, tell you whether a pregnancy is progressing normally.

Nausea and Vomiting at 8 Weeks Pregnant

Pregnancy sickness is common during the first trimester and can be particularly noticeable around this stage. Although it is often called “morning sickness”, nausea and vomiting can happen at any time of the day or night.

If you feel sick, eating small amounts more frequently may be easier than having large meals. Try to avoid going for long periods without food and sip fluids regularly throughout the day. Temporarily avoiding foods or smells that trigger your nausea may also help.

If nausea and vomiting are significantly affecting your daily life, speak to your GP, midwife or maternity service. Anti-sickness medicines can be prescribed during pregnancy when appropriate.

Important
Seek medical advice if you cannot keep food or fluids down, are passing much less urine than usual, have very dark urine, are losing weight, or feel unusually weak, dizzy or faint. Severe pregnancy sickness can cause dehydration and may require treatment.

Are Bloating and Constipation Normal at 8 Weeks?

Yes. Bloating and constipation can occur during early pregnancy. Hormonal changes, including increased progesterone, can slow the movement of food through your digestive system.

This means your abdomen may feel fuller even though you do not yet have a true pregnancy bump. Some women also notice increased wind or discomfort after eating.

Drinking plenty of fluids, including fibre-rich foods in your diet and staying gently active can help support regular bowel movements.

If constipation continues or becomes uncomfortable, speak to your GP, midwife or pharmacist before taking laxatives, herbal remedies or other treatments.

What Should You Eat at 8 Weeks Pregnant?

You do not need a special restrictive diet simply because you are pregnant. Instead, aim for a varied and balanced diet that provides the nutrients you and your developing baby need.

If nausea makes larger meals difficult, smaller portions spread throughout the day may be easier to manage. Keeping hydrated is also important, particularly if you have been vomiting.

Continue taking folic acid as recommended. In the UK, most women are advised to take 400 micrograms of folic acid every day until 12 weeks pregnant. Some women need a higher dose because of particular medical conditions, medicines or other risk factors, but this should be discussed with a healthcare professional.

Food safety is also important during pregnancy. Certain foods carry a higher risk of infection or exposure to substances that may be harmful during pregnancy, so follow current NHS guidance on foods to avoid or limit.

Good to know
You do not need to “eat for two”. During early pregnancy, the focus should be on the quality and variety of your diet rather than substantially increasing portion sizes.

Early Antenatal Care at 8 Weeks

If you have not yet arranged your antenatal care, contact your local maternity service or GP surgery to find out how maternity referrals work in your area.

Your first substantial appointment with a midwife is usually called the booking appointment. NHS guidance recommends that this should normally take place before 10 weeks of pregnancy where possible.

During your early antenatal care, your midwife will ask about your health, previous pregnancies, family history, medicines and other factors that may affect your pregnancy. Blood pressure, urine and blood tests may also form part of your assessment.

You will also receive information about screening tests offered during pregnancy. Some screening has specific timing windows, which is another reason to arrange antenatal care early.

Coming up next
In Part 3, we'll cover what can be normal at 8 weeks pregnant, warning signs that need medical assessment, what it means if your pregnancy symptoms suddenly become milder, common myths, your week 8 checklist and frequently asked questions.

What Is Considered Normal at 8 Weeks Pregnant?

At 8 weeks pregnant, symptoms can vary considerably from one woman to another. Some women experience noticeable nausea, tiredness, breast tenderness and bloating, while others have relatively mild symptoms or very few symptoms at all.

If you have an ultrasound scan at this stage, the embryo and cardiac activity can usually be identified. However, measurements and scan findings can vary because pregnancy dating is not always exact. Your healthcare professional will interpret the scan in the context of your dates, symptoms and individual circumstances.

Good to know
Pregnancy symptoms do not have to remain equally strong every day. Nausea, breast tenderness and tiredness can fluctuate, and these changes alone do not tell you whether your pregnancy is progressing normally.

How Can You Support a Healthy Pregnancy at 8 Weeks?

Your baby's brain, nervous system and major organ systems are continuing through important stages of development. Maintaining healthy pregnancy habits remains particularly important during the first trimester.

• Continue taking folic acid as recommended.
• Aim for a varied and balanced diet.
• If nausea makes eating difficult, try smaller meals more frequently.
• Drink fluids regularly throughout the day.
• Avoid alcohol and smoking.
• Do not stop prescribed medicines without speaking to your healthcare professional.
• Check with your GP, midwife or pharmacist before taking over-the-counter medicines, supplements or herbal remedies.
• Follow pregnancy food-safety guidance and avoid foods that carry an increased risk during pregnancy.
• Stay gently active if you feel well and have not been advised otherwise.

Doctor's note
Medicines should be considered individually during pregnancy. If you regularly take prescribed medication, do not stop it simply because you have discovered that you are pregnant. Speak to your GP, specialist, midwife or pharmacist about the safest approach.

When Should You Seek Medical Advice?

Mild discomfort or light spotting can occur during early pregnancy and does not always indicate a problem. However, certain symptoms should be assessed promptly, particularly when they are severe, worsening or occur together.

Seek medical advice if you experience:

• heavy or increasing vaginal bleeding;
• severe or worsening abdominal or pelvic pain;
• significant pain mainly on one side;
• pain at the tip of your shoulder;
• fainting, severe dizziness or marked weakness;
• a high temperature;
• unusual or unpleasant-smelling vaginal discharge;
• vomiting that prevents you from keeping food or fluids down; or
• signs of dehydration, such as passing much less urine than usual or very dark urine.

Urgent assessment
Severe one-sided abdominal pain accompanied by vaginal bleeding, shoulder-tip pain, dizziness or fainting requires urgent medical assessment because these can be symptoms of an ectopic pregnancy.

Is It Normal for Pregnancy Symptoms to Suddenly Become Milder at 8 Weeks?

Pregnancy symptoms can fluctuate during the first trimester. You may notice that nausea, tiredness or breast tenderness is strong one day and much milder the next.

A reduction in symptoms does not, by itself, mean that something is wrong. Some women experience relatively few symptoms throughout an otherwise healthy pregnancy.

However, if a change in symptoms occurs alongside heavy bleeding, severe pain, fainting or another symptom that concerns you, seek medical advice.

Important
The progress of a pregnancy cannot be assessed simply by whether nausea or breast tenderness is still present. When there is a clinical concern, an appropriate medical assessment provides more useful information than monitoring symptoms alone.

Common Myths About 8 Weeks Pregnant

Your Week 8 Checklist

Use this checklist to keep track of some of the essentials during week 8:

• ☐ Continue taking folic acid every day.
• ☐ Review medicines and supplements with a healthcare professional when necessary.
• ☐ Eat little and often if nausea makes larger meals difficult.
• ☐ Keep drinking fluids throughout the day.
• ☐ Follow pregnancy food-safety guidance.
• ☐ Avoid alcohol and smoking.
• ☐ Make sure your antenatal care has been arranged.
• ☐ Know which symptoms require prompt or urgent medical assessment.

Key Takeaway

At 8 weeks pregnant, your baby's body is becoming increasingly recognisable. The brain and nervous system are developing rapidly, facial structures continue to take shape, the arms and legs grow longer, and the hands and feet continue developing. You may still experience noticeable first-trimester symptoms, but their intensity varies considerably between pregnancies.

Frequently Asked Questions

How big is a baby at 8 weeks pregnant?

The embryo may measure around 16 millimetres from head to bottom. In early pregnancy, this is measured using the crown-rump length (CRL). There is normal variation, so an individual ultrasound measurement may differ from an average figure.

Can you see a heartbeat at 8 weeks pregnant?

Cardiac activity can usually be identified on an ultrasound scan at this stage. Scan findings should always be interpreted in the context of the pregnancy's developmental age and your individual circumstances.

Will I have a bump at 8 weeks pregnant?

Most women will not yet have an obvious pregnancy bump. However, hormonal changes can cause bloating, which may make your abdomen feel fuller or your clothes feel tighter around the waist.

Are the hands and feet formed at 8 weeks?

The developing hands and feet are becoming more distinct, and the areas that will form the fingers and toes continue to develop. However, the fingers and toes are not yet fully separated.

Is it normal for morning sickness to ease at 8 weeks?

Yes. Pregnancy symptoms can vary from day to day, and nausea becoming milder does not necessarily indicate a problem. Seek medical advice if you also experience concerning symptoms such as heavy bleeding or severe pain.

How many months pregnant is 8 weeks?

Eight weeks pregnant is commonly described as being around 2 months pregnant. However, maternity care uses weeks rather than months because week-by-week dating provides a more accurate way to follow pregnancy development.

Can twins be seen at 8 weeks?

An ultrasound scan may identify more than one embryo or gestational sac by this stage. Your healthcare professional can use the scan to assess the pregnancy and, where relevant, establish important features of a multiple pregnancy.

What happens at 9 weeks pregnant?

During week 9, your baby continues to grow rapidly. The face, arms and legs become more defined, development of the fingers and toes progresses, and the body gradually takes on a more recognisable human shape.

Related Guides

• 6 Weeks Pregnant Guide
• 7 Weeks Pregnant Guide
• Pregnancy Week Calculator
• Due Date Calculator
• Motherhood: Life's Most Beautiful Journey

References

• National Health Service (NHS) – 8 Weeks Pregnant
• National Health Service (NHS) – Vomiting and Morning Sickness in Pregnancy
• National Health Service (NHS) – Foods to Avoid in Pregnancy
• National Health Service (NHS) – Vitamins, Supplements and Nutrition in Pregnancy
• Royal College of Obstetricians and Gynaecologists (RCOG) – Bleeding and Pain in Early Pregnancy
• Royal College of Obstetricians and Gynaecologists (RCOG) – Ectopic Pregnancy
• National Institute for Health and Care Excellence (NICE) – Antenatal Care

Medical information: This guide provides general information and is not a substitute for individual medical advice, diagnosis or treatment. If you are concerned about your pregnancy or symptoms, contact your GP, midwife, maternity service or another appropriate healthcare professional.