Week 6 of pregnancy: changes in your body and your baby
Manuel FernándezCongratulations and welcome to week 6 of this incredible journey that is pregnancy! We, the midwives at Happymami, are here to accompany, support and guide you through every step of this wonderful journey into motherhood. We know that each day brings with it new hopes, dreams and, of course, questions and doubts. It is a time of change, discovery and an incredible sense of anticipation for what is to come.
At this very special stage, your little miracle is growing and developing at an astonishing rate, and although it is still very early, the foundations of their future are being laid day by day. It is normal to feel excited, anxious and everything in between. We want to reassure you that these feelings are completely normal and that you are not alone in this.
This article has been carefully prepared for you, based on solid, up-to-date scientific evidence, to give you clear, accurate and reassuring information about what you can expect during week 6 of your pregnancy. Our aim is to answer your questions and, above all, to celebrate with you every little milestone and development along the way.
So take a moment for yourself, breathe deeply and get ready to dive into a read that we hope will not only inform you, but also inspire you and fill you with confidence. Let's go on this journey together, full of hope and joy, towards one of the most life-changing experiences there is!
Week 6 of pregnancy: your baby's development
By week 6 of pregnancy, you are in the middle of what many consider one of the most crucial phases of foetal development. This is a time of rapid and significant change, in which your baby, although still tiny, is beginning to show the first signs of growth in several key areas. Let's take a closer look at this fascinating process:
Size and shape: In week 6, your baby is about the size of a small pea, measuring roughly 4-6 mm in length. Although it may seem tiny, the rate of growth at this stage is truly astonishing.
Heart development: One of the most exciting milestones of week 6 is the start of your baby's heartbeat. Although the heart is still developing and may look more like a pulsating tube, it begins to beat between 90 and 110 times per minute. This heartbeat can sometimes be detected with a transvaginal ultrasound, giving many parents their first audible link with their future child.
Body structures: The foundations of many essential body structures are being formed during this week. The base of the brain, the spinal cord, the muscles and the bones begin to develop. The buds that will eventually become arms and legs also begin to appear, marking the start of a more detailed development of the limbs.
Facial features: Although it is still very early, the first signs of what will become your baby's face are beginning to form. Small depressions on the side of the head will eventually become ears, and bumps at the front will develop into the eyes. The nose and mouth are also starting to take shape.
Digestive system and other organs: The neural tube, which becomes the brain and spinal cord, is closing. In addition, your baby's gut and lungs are beginning to form, along with the start of the development of other vital organs.
It is important to remember that, although this is a period of rapid development, every baby grows at their own pace. Descriptions of foetal development are general and can vary from one pregnancy to another.
Week 6 of pregnancy: symptoms
As you enter week 6 of pregnancy, you may experience a range of symptoms that reflect the hormonal and physical changes taking place in your body. Every woman is unique, and so are her pregnancy experiences. Some of the common symptoms during this week may include:
Morning nausea and vomiting
Often referred to as “morning sickness”, this symptom can occur at any time of day or night. Although the exact cause is not clear, it is thought that the nausea is related to rising levels of the hormone hCG (human chorionic gonadotropin).
Extreme fatigue
It is common to feel unusually tired or exhausted, as your body is working extra hard to support your baby's development. Raised levels of the hormone progesterone during pregnancy can also contribute to fatigue.

Changes in your breasts
You may notice that your breasts feel more sensitive, swollen or tender to the touch. This is due to the hormonal changes that are preparing your body for breastfeeding.
Increased urination
You may find yourself needing to go to the toilet more often. This is the result of the hormone hCG, which increases blood flow to the pelvic area and can stimulate urine production.
Cravings or aversions to certain foods
It is not unusual to develop sudden cravings for certain foods or to have aversions to foods you used to enjoy. These changes in food preferences are also influenced by hormonal fluctuations.
Bloating and changes in the digestive system
Rising hormone levels can slow down your digestive system, which can lead to bloating, gas or constipation.
Mood swings
Emotions during pregnancy can be a rollercoaster ride because of the hormonal changes and the emotional stress that can come with pregnancy. It is normal to feel more emotional or irritable than usual.
Nasal congestion and changes in your sense of smell
Some women experience a heightened sensitivity to smells, which can contribute to nausea. You may also notice a feeling of nasal congestion, known as “pregnancy rhinitis”.
It is important to remember that these symptoms are normal and are usually a sign that your pregnancy is progressing as expected. However, if you are worried about any symptom or if you experience something that seems unusual to you, do not hesitate to ask us at Happymami, we want you to feel supported and informed every step of the way. From preparing for birth to caring for your newborn, we are here to support you and help with any questions you have through our consultations. (internal link)
How the mum-to-be feels at week 6 of pregnancy
At week 6 of pregnancy, the emotions of the mum-to-be can be as varied and complex as the physical changes she is experiencing. This early phase of pregnancy is often a period of intense emotional adjustment. Finding out that you are pregnant can bring a wave of joy and excitement, weaving dreams and expectations about the future and the new life you are about to welcome.
However, this joy is often accompanied by a dose of anxiety and worry. It is natural to question the health and development of your baby, what motherhood will be like and how this new being will change your world. The responsibility of carrying a new life can feel overwhelming, and doubts about whether you will be up to the task can creep into your happiest thoughts.
The hormonal fluctuations of pregnancy add another layer to this emotional whirlwind, taking you from peaks of inexplicable happiness to moments of sensitivity and vulnerability, when any comment or situation can make you feel emotionally overwhelmed. This rollercoaster is normal, although not always easy to handle.
The fatigue that many women experience at this point in pregnancy can intensify these feelings, making you feel less able to cope with stress or everyday worries. You may also start to reflect on how your life, your career and your relationships will change once the baby arrives, which can create a mix of emotions and perhaps some uncertainty about the future.
The need for support becomes more evident during this time. The desire to share your fears, hopes and dreams with someone who understands what you are going through is strong. Whether it is your partner, family, friends or a pregnancy support group, finding a safe space to express your emotions can be incredibly comforting.
Despite the emotional challenges, there are also moments of deep introspection and connection. Even at this early stage, you can feel a special bond with your growing baby, imagining the future and the person they will become. These moments of calm and reflection about the kind of mother you want to be can give you a strong sense of purpose and joy.
Navigating the complex emotional landscape of pregnancy is not always easy, but it is an integral part of this transforming journey. Accepting your emotions, seeking support when you need it and looking after yourself are key steps towards a healthy and happy pregnancy experience.
At Happymami, we want you to feel supported and informed every step of the way. From preparing for birth to caring for your newborn, we are here to support you and help with any questions you have through our consultations.
Week 6 of pregnancy: Happymami tips
As midwives at HappyMami, we want to make sure you feel supported, informed and cared for during this very early and crucial stage of your pregnancy. Here are a few tips that we believe will be a great help to you:
- Prioritise your wellbeing: Your health and wellbeing are essential for your baby's development. Make sure you get enough rest, eat a balanced, nutritious diet and stay properly hydrated.

- Book your first antenatal appointment: If you have not already done so, it is important that you book your first antenatal appointment. This is a key moment to establish good communication with your healthcare provider, carry out the first important assessments and discuss any questions or concerns you may have.
- Manage the nausea: Morning sickness is common at this stage. Small, frequent meals, crackers, ginger and avoiding smells that trigger it can help to ease it. If the nausea is severe, talk to your midwife or doctor for advice and possible treatments.
- Listen to your body: If you feel tired, give yourself permission to rest. Your body is doing an amazing job and it is essential to listen to it and respect its needs.
- Stay active: Unless your doctor advises otherwise, try to keep up a routine of light exercise. Activities such as walking or prenatal yoga can be good for your physical and emotional health.
- Avoid harmful substances: Alcohol, tobacco and illegal drugs should be avoided during pregnancy. It is also important to talk to your doctor before continuing or starting any medication, including supplements and herbal remedies.
- Learn about pregnancy: Reading about pregnancy and foetal development can help you feel more connected to your baby and better prepared for the changes ahead. However, make sure you get information from reliable sources and avoid information overload.
Week 6 of pregnancy: frequently asked questions
Is it normal not to have significant symptoms at week 6?
Yes, it is completely normal. Every pregnancy is unique, and some women may not experience noticeable symptoms in the early weeks. Others may have mild or more intense symptoms. The absence of significant symptoms does not mean that anything is wrong with the pregnancy.
When should I book my first antenatal appointment?
Ideally, you should book your first antenatal visit as soon as you find out you are pregnant. Many healthcare providers prefer to see mums-to-be between weeks 6 and 8 of pregnancy. This initial visit is essential to establish antenatal care, carry out important assessments and address any questions or concerns you may have.
What can I do to manage morning sickness?
Morning sickness can be eased in several ways: eating small, frequent meals to avoid an empty stomach, choosing bland or dry foods such as crackers, avoiding foods or smells that trigger nausea, and drinking fluids in small amounts throughout the day. Ginger, in forms such as ginger tea or ginger biscuits, can also help. If the nausea is severe, speak to your healthcare provider to discuss other options.
Which exercises are safe in early pregnancy?
Most mild to moderate forms of exercise are safe and beneficial during pregnancy, as long as there are no complications or specific contraindications and with your doctor's approval. Walking, swimming, prenatal yoga and pilates are excellent options. Listen to your body and avoid strenuous exercise or high-risk sports.
How can I cope with mood swings and stress?
Mood swings are common because of hormonal changes. To manage them, try relaxation techniques such as deep breathing, meditation or yoga. Keep an open line of communication with your partner, family and friends about how you feel. It is also important to make sure you get enough rest and to seek out activities that relax you and make you happy. If you feel that your mood swings are too intense or if you feel overwhelmed, do not hesitate to seek the support of a mental health professional.