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Pregnancy is an exciting time, but it can also bring plenty of questions about how your body is changing and what to expect as your baby grows.
From early pregnancy symptoms to preparing for childbirth, understanding the different stages of pregnancy can help you feel more informed and confident throughout your journey.
Each pregnancy is unique, but knowing what happens during the three trimesters of pregnancy can help you recognise important milestones and understand when to seek medical advice.
Pregnancy is divided into three trimesters, each marking important stages in your baby’s development and changes in your body.
The pregnancy timeline is generally divided into:
If you’re wondering how many weeks is pregnancy, a full-term pregnancy is typically around 40 weeks, calculated from the first day of your last menstrual period.
The first trimester is one of the most important stages of pregnancy, with significant fetal development taking place before many women begin showing visible signs of pregnancy.
During these first 12 weeks, your baby’s brain, spinal cord, heart and other major organs begin forming. By approximately six weeks of gestational age, cardiac activity may be visible on a pregnancy ultrasound. By the end of the trimester, your baby has developed recognisable facial features, arms, legs, fingers and toes.
Your body is also adjusting to significant hormonal changes. Rising pregnancy hormones can cause nausea, breast tenderness, fatigue and frequent urination. While these symptoms are common, their severity varies considerably between women.
The first trimester also carries the highest risk of miscarriage, making early pregnancy care particularly important. Dr Joseph Sgroi recommends an early pregnancy ultrasound, generally between six and eight weeks, to help confirm pregnancy dating, location and viability.
Often considered a more comfortable stage of pregnancy, the second trimester brings noticeable changes as your baby continues growing and your body adjusts to pregnancy.
Between weeks 13 and 27, fetal growth accelerates, your baby’s bones continue developing and movements become more coordinated. Most women begin feeling their baby’s first movements between 16 and 24 weeks, often described as gentle fluttering or bubbling sensations.
For many women, early pregnancy nausea and fatigue begin to ease during this trimester. However, as your uterus expands, you may notice a growing baby bump, changes in your skin, mild back discomfort or increased appetite.
An important milestone is the detailed anatomy ultrasound, usually performed around 18-22 weeks. This scan examines your baby’s developing organs, including the brain, heart, spine and kidneys, while also assessing growth, the placenta and amniotic fluid.
During this trimester ultrasounds are critical, as they allow Dr Joseph to check your baby’s growth, heartbeat and position as your pregnancy progresses.
The third trimester begins at week 28 and continues until birth, with your baby’s development increasingly focused on growth and preparing for life outside the womb.
During this stage, your baby gains weight, builds fat stores and continues developing important organs, particularly the lungs and brain. As your due date approaches, many babies gradually move into a head-down position in preparation for birth.
You may also notice greater physical discomfort as your baby grows. Common experiences include pelvic pressure, back pain, difficulty sleeping, heartburn and Braxton Hicks contractions, which are irregular tightening sensations that don’t necessarily indicate labour.
Monitoring your baby’s movements becomes particularly important during this trimester. Rather than expecting a specific number of kicks, pay attention to your baby’s usual movement pattern and contact your maternity care provider immediately if movements decrease or change.
Dr Joseph’s antenatal care schedule recommends appointments every two weeks from 28 to 36 weeks, followed by weekly visits until childbirth, with additional monitoring when required.
These later appointments provide an opportunity to monitor your health, assess your baby’s growth and position, and discuss your preferences for labour and delivery, helping you feel more prepared as your due date approaches.
Pregnancy symptoms vary between individuals, although certain changes are more common at different stages.
Common symptoms include:
Due to increases in pregnancy hormones.
Many women experience
The following symptoms may become more notceable:
While many symptoms are expected, sudden or severe changes should always be discussed with your healthcare provider.
Regular antenatal appointments are an important part of prenatal care, supporting both fetal development and maternal health.
Dr Joseph Sgroi’s published antenatal care schedule includes:
The initial consultation generally lasts 30-45 minutes and includes reviewing your pregnancy history, blood pressure and relevant health concerns.
Pregnancy scans and screening tests are recommended according to your gestational age and individual circumstances.
You should contact your obstetrician if you experience vaginal bleeding, persistent abdominal pain, severe headaches, visual disturbances or concerns about your baby’s movements.
Reduced or changed fetal movements require prompt assessment. Do not wait until your next scheduled appointment.
As an experienced obstetrician in Melbourne, Dr Joseph Sgroi provides personalised pregnancy monitoring and guidance throughout each trimester.
Learn more about Dr Joseph’s pregnancy care services and how specialist support can help throughout your pregnancy.
Every pregnancy is different, and your care should reflect your individual circumstances.
Dr Joseph Sgroi provides comprehensive obstetric care, supporting women through pregnancy, childbirth and beyond.
From early pregnancy assessments to birth planning, his approach focuses on personalised care, informed decisions and supporting the wellbeing of both mother and baby.
Whether you’re beginning your pregnancy journey or preparing for delivery, contact Dr Joseph Sgroi to learn more and discuss your pregnancy care options.
There is no single hardest trimester. The first trimester can bring nausea and fatigue, while the third trimester often involves greater physical discomfort. Experiences vary between pregnancies.
Most women first notice their baby’s movements between 16 and 24 weeks of pregnancy. First-time mothers may recognise movement later than those who have been pregnant before.
A baby bump commonly becomes noticeable during the second trimester, although timing varies depending on body shape, abdominal muscles and previous pregnancies.
For most uncomplicated pregnancies, regular moderate exercise is safe and beneficial. Activities should be adapted to your fitness and medical circumstances. Read Dr Joseph’s exercise during pregnancy guide for further information.
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