1st Trimester (Weeks 1–13)

The first three months of pregnancy are when the baby’s organs begin to develop and the expectant mother experiences the most intense pregnancy symptoms.

Weeks 1–4: Beginning of Pregnancy

• Fertilization occurs and the embryo implants in the uterus.
• The baby’s nervous system and cells begin to develop.
• The expectant mother may experience a missed period.

📌 At this stage, a pregnancy test should be taken and a doctor’s visit scheduled.

Weeks 5–8: Heartbeat Begins

• The baby’s heartbeat can be detected via ultrasound.
• Arms, legs, and facial features start to form.
• The expectant mother may experience nausea, fatigue, and breast tenderness.

📌 At the first doctor’s visit, blood tests and an ultrasound are performed.

Weeks 9–12: Organ Formation

• All of the baby’s organs begin to develop.
• Fingers and toes form, and the kidneys start functioning.
• The expectant mother may begin to gain weight gradually.

📌 Between weeks 11–14, the First Trimester Screening Test should be performed.

2nd Trimester (Weeks 14–27)

During this period, the baby grows rapidly and pregnancy symptoms decrease. It is considered the most comfortable stage of pregnancy.

Weeks 13–16: Baby’s Movements Begin

• The baby’s muscles strengthen and movements begin.
• The baby’s gender can often be determined (though sometimes later).
• Nausea decreases and the expectant mother feels more energetic.

📌 Urinary tract infections are common in this period, so drinking plenty of water is important.

Weeks 17–20: Feeling the Baby

• The baby starts moving in the womb, and kicks can be felt.
• Skin darkening, stretch marks, and hormonal changes become more noticeable.
• The expectant mother undergoes a detailed ultrasound at week 20.

📌 The Quad Screen Test may be performed during these weeks.

Weeks 21–24: Lung Development

• The baby’s lungs and sense of taste develop.
• The baby begins to hear sounds inside the womb.
• The expectant mother may experience back pain and cramps.

📌 Between weeks 24–28, the Glucose Tolerance Test (for gestational diabetes) should be performed.

3rd Trimester (Weeks 28–40)

In the final three months, the baby grows quickly and prepares for birth. Expectant mothers should make their birth plan during this period.

Weeks 25–30: Baby’s Eyes Open

• The baby’s eyelids open and respond to light.
• The baby begins developing a sleep pattern.
• The expectant mother may experience insomnia and shortness of breath.

📌 From week 32 onward, the NST (Non-Stress Test) should be done regularly.

Weeks 31–35: Preparing for Birth Position

• The baby starts to move into a head-down position.
• The expectant mother may experience pelvic pain, urinary leakage, and heartburn.
• The baby continues gaining weight in preparation for birth.

📌 The hospital bag should be prepared and hospital choice finalized.

Weeks 36–40: Birth is Near!

• The baby settles into the head-down position, ready for delivery.
• Labor contractions (Braxton Hicks contractions) may be felt.
• If the water breaks, contractions become regular, or bleeding occurs, the mother should go to the hospital immediately.

📌 Birth usually occurs between weeks 37–40. If it has not begun by week 41, the doctor may induce labor.

Tips for Week-by-Week Pregnancy Tracking

• Attend regular doctor check-ups
• Maintain a healthy diet and drink plenty of water
• Engage in light exercises (walking, yoga, pilates, etc.)
• Wear comfortable clothing and supportive shoes
• Take childbirth preparation classes and learn breathing techniques
• Make a birth plan and prepare your hospital bag

📌 Every pregnancy is different, so it is essential to follow your doctor’s personalized recommendations.

Conclusion: A Healthy Pregnancy with Week-by-Week Tracking

• Monitor baby’s development and maternal changes each week.
• Have all required tests and ultrasounds performed on time.
• Healthy nutrition, exercise, and stress management make pregnancy more comfortable.
• As birth approaches, doctor visits should become more frequent and preparations should be finalized.

📌 By tracking your pregnancy carefully, you can best support your baby’s development and prepare yourself for childbirth.