6 Weeks Pregnant: Your Symptoms

At 6 weeks pregnant, morning sickness often kicks in with full force — and for many women this is the point at which pregnancy starts to feel very real. Your baby, currently about the size of a lentil, has a beating heart (though you won't be able to feel it yet) and is developing rapidly. Hormone levels — particularly human chorionic gonadotropin (hCG) and progesterone — are rising quickly, and it is these hormones that drive most of the symptoms you may be experiencing.

Six weeks is also when many women are waiting anxiously for their first scan or booking appointment. If you haven't yet registered with your GP or contacted your local maternity team, now is a good time to do so. In the UK, your booking appointment is usually offered between weeks 8 and 12 — your GP can refer you, or you can self-refer to your local midwifery team depending on your area.

Common Symptoms at 6 Weeks

• Nausea and morning sickness — Despite its name, pregnancy nausea can strike at any time of day. For some women it is a mild background queasiness; for others it is severe and constant. Both are normal. Eating small, frequent meals and keeping plain snacks like crackers nearby can help manage it.
• Fatigue and tiredness — Extreme tiredness at 6 weeks is very common. Your body is producing more blood, your heart is pumping harder, and your hormones are surging — all of which takes significant energy. Rest as much as you can.
• Breast tenderness — Sore, heavy, or tingly breasts are among the earliest pregnancy symptoms. Your breasts are already preparing for breastfeeding, and the increased blood flow can make them feel very sensitive. The areolae may also begin to darken.
• Frequent urination — Your kidneys are filtering more blood than usual, and rising hCG increases urinary frequency. This is normal and is not a sign of infection on its own.
• Mood swings — Rapidly shifting oestrogen and progesterone levels affect your brain chemistry. You may feel tearful, irritable, anxious, or unexpectedly emotional — sometimes all within the same hour.
• Bloating — Progesterone slows digestion, which can cause a feeling of fullness, trapped wind, or a slightly swollen abdomen even this early.
• Food cravings or aversions — Strong aversions to foods or smells — even ones you previously loved — are very common. Some women also develop cravings. Eat what you can manage, and try to keep your diet as balanced as possible within those limits.
• Heightened sense of smell — An enhanced sense of smell (known as hyperosmia) is thought to be linked to oestrogen. It can make nausea worse, particularly around cooking smells or strong fragrances.
• Mild cramping — Some women experience mild, period-like cramps as the uterus begins to grow and its ligaments stretch. This is usually harmless, though any cramping accompanied by heavy bleeding should be assessed promptly.
• Light spotting — Implantation bleeding (light spotting around the time your period would have been due) can sometimes be seen at or around 6 weeks. A small amount of pink or brown spotting does not necessarily indicate a problem, but always mention any bleeding to your midwife.
• Headaches — Hormonal changes and shifts in blood pressure and blood volume can trigger headaches in early pregnancy. Paracetamol at the recommended dose is generally considered safe — speak to your midwife or GP before taking other pain relief.
• Heightened anxiety — Many women feel more anxious than usual in very early pregnancy, particularly if they have experienced pregnancy loss before. This is an understandable response, and if anxiety is affecting your daily life, it is worth speaking to your midwife or GP.

What's Normal at 6 Weeks

Symptoms can vary significantly from day to day. A day where you feel well is not a warning sign — hormone levels naturally fluctuate, and some days will feel easier than others. It does not mean anything has changed with your pregnancy.

At 6 weeks, your uterus is roughly the size of a plum and your baby is still tiny. You are unlikely to look pregnant yet, and any bloating is not your baby showing — it is your digestive system slowing down due to progesterone.

Most first trimester symptoms are driven by hCG, which continues to rise until around weeks 8 to 10 before beginning to plateau. This is why symptoms often feel most intense somewhere between weeks 6 and 10 for many women.

Practical Tips for Week 6

• For nausea: try eating a small amount before getting out of bed in the morning; cold foods and drinks are often more tolerable than hot ones; ginger in small amounts (such as ginger biscuits or ginger tea) may help some women.
• For fatigue: sleep when you can; do not push through exhaustion if you are able to rest; gentle activity such as a short walk can sometimes help with energy levels.
• For breast tenderness: a supportive, well-fitted bra — including at night if needed — can make a significant difference.
• For bloating: eat slowly, avoid carbonated drinks if they worsen symptoms, and stay well hydrated.

When to Seek Help

• Heavy bleeding (soaking a pad)
• Severe one-sided abdominal pain — this can be a sign of an ectopic pregnancy, which is a medical emergency. Call 999 or go to A&E if the pain is sudden and severe.
• Fever above 38°C
• Inability to keep any fluids down for 24 hours or more — this may indicate hyperemesis gravidarum, which requires treatment
• Sudden complete loss of all pregnancy symptoms, particularly if accompanied by bleeding or pain
• Pain or burning when urinating — urinary tract infections are more common in pregnancy and should be treated

If you are worried about ectopic pregnancy at any point — particularly if you have one-sided pain, shoulder-tip pain, or feel faint alongside any bleeding — do not wait. Go to A&E or call 999.

Frequently Asked Questions

Yes. Some women experience very few symptoms, or none that they notice, throughout early pregnancy. The absence of symptoms does not mean your pregnancy is not progressing — symptom severity is driven by hormone levels, which vary between individuals. If you are concerned, speak to your midwife, who may be able to arrange an early reassurance scan.

When will morning sickness ease?

For most women, nausea begins to ease between weeks 12 and 14, as hCG levels start to stabilise and the placenta takes over hormone production. Some women feel better earlier; others find it continues into the second trimester. If you are struggling to eat or drink, speak to your GP — there are safe anti-sickness medications available in pregnancy.

Should I be worried about cramping at 6 weeks?

Mild, period-like cramping can be entirely normal at 6 weeks as your uterus grows and stretches. However, severe cramping — especially if it is one-sided or accompanied by heavy bleeding — should be assessed urgently. Contact your midwife, call 111, or go to your nearest Early Pregnancy Unit (EPU).

This article is for informational purposes only and does not constitute medical advice. Always speak to your midwife or GP for advice specific to your pregnancy.

Related articles:

• Pregnancy Symptoms Guide