Raspberry-sized, busy growing, and making you need another nap

8 Weeks Pregnant: Symptoms, Baby Size and What to Do

Eight weeks can feel surprisingly dramatic for something nobody else can see. Your jeans may feel rude, the fridge may smell criminal and a 9pm bedtime can sound thrilling. Or you may feel almost exactly like yourself.

Both ends of that spectrum can happen. This guide explains what the dates mean, what is developing, what usually happens at the booking appointment and which symptoms deserve a call rather than another internet search.

What does 8 weeks pregnant mean?

Pregnancy is normally dated from the first day of your last menstrual period, not from conception. In a textbook 28-day cycle, eight weeks pregnant is therefore roughly six weeks after fertilisation. Real cycles are not textbooks, so ovulating earlier or later can shift the estimate.

Our due date calculator can give you a sensible planning date without sending any personal data anywhere. A dating scan may change that estimate. If you had IVF or another fertility treatment, use the dates and instructions from your clinic.

If you have arrived here straight after a positive test, the 6 weeks pregnant guide covers the earlier jobs, while 12 weeks pregnant explains the usual dating-scan window.

How big is the baby at 8 weeks?

The current NHS week-eight guide gives a head-to-bottom length of about 16mm, around the size of a raspberry. Tiny does not mean idle. The head is beginning to uncurl, the arms and legs are getting longer and the placenta is developing its connection with the wall of the womb.

Around this point, the medical term changes from embryo to foetus. That change of label does not mean development has suddenly finished. Organs, limbs and facial structures are still forming and maturing. Movement is happening, but it is much too small for you to feel.

Online fruit comparisons are memorable, not measuring equipment. A few days makes a noticeable difference at this stage, and a scan measurement can adjust the dates. Our pregnancy ultrasound timeline explains what routine NHS scans are for.

Common symptoms at 8 weeks

You might have several symptoms, only one, or none that stand out:

• Nausea or vomiting: “morning” sickness can turn up morning, noon or night.
• Heavy tiredness: ordinary tasks can feel like they have quietly doubled in weight.
• Sore or fuller breasts: tenderness, tingling and darker nipples can occur.
• More trips to the loo: frequent urination is common; burning, fever or pain needs checking.
• Bloating, wind or constipation: hormones can slow digestion before there is a visible bump.
• Mild period-like cramps: these can occur, but pain that is severe, one-sided or worsening needs advice.
• Metallic taste, smell sensitivity or food aversions: suddenly hating tea is inconvenient, not unusual.
• White milky discharge: extra discharge can be normal if it does not smell unpleasant or cause soreness or itching.
• Mood changes or headaches: hormones, tiredness, hunger and the sheer size of the news can all play a part.

Symptoms cannot tell you whether hormone levels are “high enough”, whether there is more than one baby or how the pregnancy is progressing. The early pregnancy signs guide separates useful clues from popular myths.

What can help with nausea and exhaustion?

Small frequent meals, plain foods, little sips of fluid and avoiding smells that trigger nausea help some people. Cold food can be easier when cooking smells are the enemy. Rest when you can. Ginger food or drink and acupressure wristbands may help, but check concentrated ginger supplements or any herbal remedy with a pharmacist first.

Pregnancy-safe anti-sickness medicines are available. Contact your midwife, GP or NHS 111 if you cannot keep food or fluids down, have very dark urine, have not peed for more than eight hours, feel faint or very weak, have abdominal pain or fever, vomit blood or are losing weight. Severe pregnancy sickness is treatable; you do not have to earn help by becoming completely dehydrated.

Your booking appointment around 8 weeks

If you have not entered maternity care yet, refer yourself now. In England, the NHS has an online maternity self-referral route; services elsewhere in the UK use their own local systems. The booking appointment usually happens between weeks 8 and 12 and can take around an hour.

The midwife will normally ask about your physical and mental health, previous pregnancies, medicines, family history, work, home life and support. You may be offered blood and urine tests, blood-pressure checks and information about antenatal screening. Honest answers help the team tailor care; the appointment is not a test of whether you have been a perfect pregnant person.

Write down medicine names and questions beforehand. Tell the team about a long-term condition, previous ectopic pregnancy or loss, fertility treatment, severe sickness, mental-health history, safeguarding concern or anything else affecting care. Keep taking prescribed medicine unless the clinician responsible for it tells you to change it.

Will you have a scan at 8 weeks?

Not everyone has a routine NHS scan at eight weeks. In England, the dating scan is generally offered around 10 to 14 weeks. An earlier scan may be arranged for bleeding, pain, fertility treatment, previous history or another clinical reason. Private reassurance scans are also available, but scanning very early can produce an uncertain result simply because the dates are earlier than expected.

The early pregnancy scan guide explains what may be visible and why repeat scans or blood tests are sometimes needed. A single image should always be interpreted by the clinical team, not by an app, forum or photo comparison.

A useful 8-week checklist

• Start maternity care: do not wait for a scan before referring yourself.
• Keep taking folic acid: the usual NHS advice is 400 micrograms daily through week 12; some people need prescribed 5mg folic acid.
• Follow vitamin D advice: the standard NHS dose is 10 micrograms daily during the advised months, with year-round use recommended for some people.
• Check every medicine: include prescriptions, painkillers, vitamins, herbal remedies and shop-bought products. Do not abruptly stop essential treatment.
• Use the current food list: wash produce, keep caffeine to no more than 200mg a day and avoid alcohol.
• Move comfortably: ordinary activity is usually encouraged in an uncomplicated pregnancy; start gently if you were not active before.
• Ask for emotional support: tell a midwife or GP if anxiety or low mood is taking over your day.

If indigestion or a blocked nose joins the party, use the checked KidsCo guides to Gaviscon in pregnancy and Vicks in pregnancy as a starting point, then check what is suitable for you.

Bleeding, pain and when to get help

Bleeding in pregnancy is not always serious, but it should be discussed with a healthcare professional. Contact your maternity unit or early pregnancy unit if you have their number; if you are under 20 weeks and cannot reach one, use NHS 111. Our early-pregnancy bleeding guide lays out the routes clearly.

Call 999 if bleeding comes with severe abdominal pain, shoulder pain, faintness, dizziness, loss of consciousness or bleeding heavy enough to soak a pad soon after putting it on. Ectopic-pregnancy symptoms often develop between weeks 4 and 12 and can include one-sided lower abdominal pain, bleeding or brown watery discharge, shoulder-tip pain and discomfort when peeing or pooing. A concerning combination needs prompt advice even if you have not had a positive test.

Also get advice for fever, pain when peeing, chest pain, serious breathlessness, a severe headache, vision changes or simply feeling very unwell. Nobody sensible will be annoyed that you checked.

Common questions at 8 weeks

Is it normal to have no symptoms at 8 weeks?

Yes. Symptoms differ between people and can come and go. Their absence alone does not diagnose a problem. Ask for advice if a change comes with bleeding, pain or another concern.

Should you have a bump?

There is no correct eight-week silhouette. Bloating, body shape, muscle tone and previous pregnancies all affect how clothes fit. The uterus is still low in the pelvis, so an early rounded tummy is often mostly bloating.

Can you feel the baby move?

No. Movement is beginning, but the foetus is far too small for you to feel it at eight weeks.

Can an 8-week scan show a heartbeat?

Cardiac activity may be visible on ultrasound by this stage, but late ovulation or uncertain dates can make a pregnancy look earlier. The scan type, image and measurements need professional interpretation. If the result is uncertain, the clinical team may arrange a repeat rather than making an immediate conclusion.

When should you tell people?

Whenever support would feel useful. Some people wait until after a dating scan; others tell a trusted person immediately. There is no medically correct announcement day.

The bottom line

At eight weeks, the embryo is becoming a foetus and growing quickly, while your own symptoms may be loud, quiet or inconsistent. Start maternity care, keep up the recommended supplements, check medicines and know the routes for severe sickness, pain or bleeding. You do not need to judge the pregnancy by how convincingly pregnant you feel.

Sources reviewed

Editorial check: KidsCo Editorial Team, 6 August 2026. This is general UK pregnancy information, not a diagnosis, scan interpretation or personal care plan.

• NHS Best Start in Life: week 8
• NHS: refer yourself for pregnancy care
• NHS: pregnancy vitamins and supplements
• NHS: medicines in pregnancy
• NHS: foods to avoid in pregnancy
• NHS: drinking alcohol while pregnant
• NHS: exercise in pregnancy
• NHS: vomiting and morning sickness
• NHS: vaginal bleeding in pregnancy
• NHS: ectopic pregnancy
• NHS pregnancy guide and NHS trying to get pregnant (original references retained)

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Written and fully reviewed by the KidsCo Editorial Team

The editorial desk rebuilt this guide against current NHS week-eight, maternity-care, supplements, medicines, sickness, bleeding and ectopic-pregnancy guidance on 6 August 2026. Editorial review is not an obstetric, midwifery or ultrasound qualification.

How KidsCo researches and corrects pregnancy guides