Week 15 of pregnancy: growth and development of the baby
Manuel FernándezHello dear mums-to-be! Welcome to the exciting week 15 of your pregnancy. At Happymami, we are delighted to accompany you on this beautiful journey into motherhood. At this stage, your baby is growing quickly, and you are experiencing exciting changes and new milestones in this incredible process of pregnancy.
At Happymami, we are committed to giving you information backed by scientific evidence and useful tips so that you can make the most of this stage of your pregnancy. We are here to help you navigate the challenges and celebrate every special moment as you prepare to welcome your little treasure.
So get ready to explore the wonderful changes and discoveries of week 15 with us. Let's begin this wonderful adventure together!
Week 15 of pregnancy: your baby's development
At this exciting stage, your baby is growing quickly and reaching new milestones in their development. Here is everything you need to know about how your little treasure is growing and developing.
Size and weight: At this stage, your baby is growing quickly and is already around 10 centimetres long, about the size of an avocado. Their weight also keeps increasing as their muscles and bones develop.
Movements: Your baby is becoming more and more active inside the uterus, and their movements are becoming more noticeable. Although you may not be able to feel all their movements yet, your little one is turning, kicking and moving with energy.
Development of the senses: During this week, your baby's sensory organs, such as the eyes, ears and skin, continue to develop. Their hearing is becoming more refined and they can pick up sounds from outside, such as your voice and your heartbeat.
Nervous system: Your baby's nervous system is in full development, with growing neurons and brain connections forming. Their brain is maturing quickly, getting ready to control vital functions and respond to external stimuli.
Genitals: At this stage, an ultrasound may reveal your baby's sex, as the external genitals are beginning to develop more clearly. Bear in mind, however, that accuracy can vary and you may prefer to wait for confirmation at a future scan.
Week 15 of pregnancy: symptoms
At this stage, you may experience a range of symptoms as your body continues to adapt to pregnancy. Here is a list of the common symptoms you might notice during this week:
More energy: Many women experience a boost of energy during the second trimester, which can make you feel more active and energetic.
Nausea and vomiting: Although morning sickness may have eased compared with the first trimester, you may still have occasional episodes of nausea and vomiting.

Skin changes: You may notice changes in your skin, such as dark patches or lines on your abdomen, known as the linea alba. Acne or oilier skin is also common because of hormonal changes.
Increased appetite: With morning sickness easing, you may feel hungrier during this stage of pregnancy. It is important to follow a healthy, balanced diet to meet the nutritional needs of both you and your growing baby.
Your uterus getting bigger: As your baby continues to grow, you may feel your uterus increasing in size, which can cause mild discomfort or a feeling of fullness in the lower abdomen.
Changes in your breasts: You may notice that your breasts are more sensitive or that they have grown larger. It is also common for the areolas to darken and for the veins to become more visible.
How does the mum-to-be feel at week 15 of pregnancy?
At week 15 of pregnancy, you are likely to experience a mix of emotions and thoughts as you move into this new phase of your prenatal journey. First of all, you may feel growing excitement and anticipation as your pregnancy progresses and you get closer to meeting your baby. This excitement can fill you with joy and positive expectations about what is to come.
Alongside the excitement, however, it is normal for some worries and anxieties to arise. You may find yourself wondering about your baby's health and development, as well as the changes you will experience in your life after birth. These concerns are natural and can be eased with accurate information and the support of your loved ones and healthcare professionals.
You may also notice some physical changes in your body as your pregnancy progresses. Your bump will probably start to grow more noticeably, which can bring mixed feelings about your body image. Remember that these changes are normal and that your body is doing what it needs to do to give your baby life.
Overall, week 15 is a time of preparation and reflection. You can start planning the next steps of your pregnancy, such as your antenatal appointments and additional medical tests. This sense of preparation can give you a feeling of control and calm as you adapt to the changes of your pregnancy.
You may also begin to feel a deeper connection with your baby as the weeks go by. Feeling their movements inside you can strengthen the emotional bond between mother and child and create a growing sense of love and connection.
Remember that every pregnancy is unique and that it is normal to experience a range of emotions during this time. If you feel overwhelmed by your emotions or you have concerns about your emotional wellbeing, do not hesitate to talk to your doctor or seek additional support. At Happymami we are here to accompany you at every step of your pregnancy journey and give you the support you need.
At Happymami, we want you to feel supported and informed at every step of this journey. From preparing for birth to caring for your newborn, we are here to offer you support and help you with any questions you have through our consultations.
Week 15 of pregnancy: Happymami tips
At this stage, it is essential to keep looking after yourself and your growing baby. Here are some tips to make this week an even more wonderful experience:
Follow a balanced diet: Make sure you include a variety of nutritious foods in your diet to support your baby's proper development and keep yourself healthy during pregnancy.
Stay well hydrated: Drinking enough water is essential to keep you hydrated and support your baby's healthy growth and development. Try to carry a water bottle with you to remind yourself to take sips throughout the day.
Listen to your body: Your body will give you signals about what it needs. Rest when you feel tired, and do not hesitate to see your doctor if you experience any discomfort or worrying symptoms.
Keep up moderate exercise: Regular exercise can help you maintain your energy, improve your mood and prepare your body for birth. Choose activities that are safe in pregnancy, such as walking, swimming or practising prenatal yoga.
Look after your skin: With the rise in hormones during pregnancy, you may notice changes in your skin. Use moisturisers and sunscreen to help keep your skin soft and protected.
Talk to your partner: Talk to your partner about your emotions, worries and expectations during pregnancy. Open communication can strengthen your bond and help you face together any challenges that may arise.
Enjoy the moment: Make the most of this time to connect with your baby and enjoy every stage of pregnancy. Take moments to relax, practise meditation or simply rest and enjoy the experience.
Week 15 of pregnancy: frequently asked questions
What are the normal symptoms at week 15 of pregnancy?
During this stage, you may experience symptoms such as nausea, fatigue, changes in appetite and a growing abdomen as your baby develops.
Is it safe to exercise during the second trimester?
Yes, moderate exercise is safe and beneficial during pregnancy. You can choose activities such as walking, swimming or prenatal yoga, always checking with your doctor before starting any exercise routine.
When will I be able to feel my baby's movements?
Around weeks 15 to 20, some women begin to feel their baby's first movements, known as “kicks”. However, every woman and every pregnancy is different, so do not worry if you have not felt them yet.
How can I relieve the common discomforts at this stage?
You can relieve nausea by eating small, frequent meals, resting enough and keeping hydrated. For fatigue, try to rest and sleep as much as you need, and consider taking short naps during the day if possible.
When should I start arranging nursery care and buying things for the baby?
You can start arranging nursery care and buying items for your baby at any time, but many women prefer to wait until the second trimester, when they feel more confident and comfortable. There is no rush, so take your time and go at your own pace.