your pregnancy week by week
Welcome to your complete guide to pregnancy! Track your baby's development and your body's amazing changes through all 40+ weeks of pregnancy. From tiny poppy seed to full-term baby. discover what's happening each week.
track your amazing journey
Every week brings new developments and milestones. Use this guide to understand what's happening with your baby and your body throughout your pregnancy.
baby development
Track your baby's growth from conception to birth
your symptoms
Understand what you're experiencing each week
key milestones
Important development and checkups
first trimester
first trimester
- Foundation and early developments
- Weeks 1-13
The first trimester is the most critical period of pregnancy development. During these first 13 weeks, your baby transforms from a fertilized egg into a fully formed fetus with all major organs and body systems beginning to function. This is when the neural tube develops into the brain and spinal cord, the heart begins beating, and limbs start forming. Many women experience morning sickness, fatigue, and breast tenderness during this time as hormone levels surge to support the pregnancy.
week 1 of pregnancy
- baby development
Fertilization occurs - the sperm meets the egg and conception begins
- common symptoms
- missed period
- tender breasts
- mood swings
- key milestones
- ovulation
- conception
- this week
tip:
start taking folic acid suppliments
tip:
start taking folic acid suppliments
second trimester
second trimester
- Growth and movement.
- Weeks 14-27
The second trimester is often called the "golden period" of pregnancy. Energy levels typically increase, morning sickness subsides, and you may start feeling your baby's first movements. This is when the anatomy scan occurs around week 20, revealing your baby's gender and checking for proper development. Your baby's hearing develops, they can swallow, and their bones begin hardening. The risk of miscarriage significantly decreases during this trimester.
week 14 of pregnancy
- baby development
Baby can make facial expressions and may start sucking thumb
- common symptoms
- increased energy
- glowing skins
- growing belly
- key milestones
- facial expressions
- hair growth
- this week
tip:
start belly photos
tip:
anatomy scan preparation
third trimester
third trimester
- Final development and birth preparation
- Weeks 28-42
The third trimester focuses on final growth and preparation for birth. Your baby's lungs mature, brain development accelerates, and they gain most of their birth weight. You may experience more discomfort as your baby grows larger, including shortness of breath, frequent urination, and difficulty sleeping. Regular prenatal appointments increase to monitor your baby's position, growth, and your health as you approach delivery.
week 28 of pregnancy
- baby development
Eyes can see light and baby can blink
- common symptoms
- frequent urination
- braxton hicks
- fatigue returns
- key milestones
- light perceptions
- rapid weight gain
- this week
tip:
start child birth classes
tip:
third trimester screening
Congratulations on Your Journey!
Remember that every pregnancy is unique. While this guide provides general information about typical pregnancy development, always consult with your healthcare provider for personalized advice and care.
frequantly asked questions
common questions asked about pregnancy week-by-week development
when does pregnancy officially start?
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how accurate are baby size comparisions?
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when will i feel my baby move?
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what if my symptons dont match what's expected?
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