Weeks 21-24: Rapid Fetal Development
This stage is a critical period for rapid fetal development. Weight and length will increase significantly. It is also an important period for gestational diabetes screening.
Fetal Development
Physical Development
- Length: About 25-30 cm
- Weight: About 500-600 g
- Body Type: More proportionate, subcutaneous fat begins to deposit
- Skin: Still wrinkled, but gradually becoming fuller
Important Development Characteristics
Brain Development
- Sulci and gyri begin to appear on the brain surface
- Neuron connections increase rapidly
- Sleep cycle begins to establish
- Memory and learning abilities sprout
Lung Development
- Bronchi and alveoli continue to develop
- Start practicing breathing movements
- Surfactant begins to be produced
- Prepare for breathing after birth
Sensory System
- Hearing: Can hear clearer sounds
- Vision: Can perceive light and dark
- Touch: Whole body touch is sensitive
- Taste: Can perceive changes in amniotic fluid taste
Important Checkup Items
Gestational Diabetes Screening (24-28 Weeks)
Screening Reasons
- Hormonal changes during pregnancy may lead to insulin resistance
- Timely detection and intervention are important for maternal and infant health
- High blood sugar may affect fetal development
Checkup Process
- Fasting Blood Glucose: Draw blood after fasting for 8-12 hours
- Oral Glucose: Drink 75 g glucose water
- 1 Hour After: Draw blood to test blood sugar
- 2 Hours After: Draw blood to test blood sugar
Result Interpretation
- Normal: Fasting <5.1, 1 hour <10.0, 2 hours <8.5
- Abnormal: Any indicator exceeding the standard requires further examination
- Gestational Diabetes: Diet control and blood sugar monitoring required
Routine Prenatal Checkup
- Measure fundal height and abdominal circumference
- Monitor fetal heart sounds
- Check weight gain
- Blood pressure and urine protein check
Maternal Changes
Physical Changes
Abdomen and Weight
- Fundus of uterus is about 1-2 finger widths above the navel
- Total weight gain about 4-6 kg
- Abdomen bulges significantly
- Stretch marks may appear
Other Changes
- Fetal movement is obvious and powerful
- Breasts may secrete colostrum
- Skin pigmentation may worsen
- Slight edema is normal
Emotion and Psychology
- Full of expectations for fetal movement
- Start to have substantial consideration for delivery
- Mood is relatively stable but may have anxiety
- Start preparing baby products
Life Guidance
Diet Management
Blood Sugar Control Suggestions
- Staple Food: Choose whole grains, avoid refined rice and flour
- Protein: Have high-quality protein at every meal
- Vegetables: Eat more green leafy vegetables and beans
- Fruit: Moderate amount, avoid high-sugar fruits
Specific Dietary Advice
- Small frequent meals, 5-6 meals a day
- Avoid excessively long fasting time
- Control total calorie intake
- Avoid high-sugar and high-fat foods
Exercise Suggestions
Recommended Exercises
- Walk 15-20 minutes after meals
- Prenatal Yoga or Pilates
- Swimming or water exercises
- Stretching exercises
Blood Sugar Management Exercise
- Start exercise 30 minutes after meals
- Moderate exercise intensity
- Last for 20-30 minutes
- Regularly monitor blood sugar changes
Daily Care
Abdominal Care
- Massage with pregnancy cream
- Avoid overstretching
- Wear breathable maternity clothes
- Keep abdomen clean
Breast Care
- Use maternity bras
- Clean with warm water, avoid using soap
- Gentle massage to promote blood circulation
- Use breast pads if there is discharge
Prenatal Education Suggestions
Multi-sensory Stimulation
- Hearing: Play beautiful music, talk to the fetus more
- Touch: Gently touch the abdomen, let the fetus feel the touch
- Vision: Activities in sunny places
- Emotion: Maintain a happy mood
Father-Fetus Interaction
- Dad participates in prenatal education activities
- Tell stories or sing to the fetus
- Pat the abdomen gently to interact with the fetus
- Establish early parent-child relationship
Possible Problems
Common Discomforts
- Back pain: Use cushions, avoid sitting for a long time
- Heartburn: Small frequent meals, avoid spicy food
- Constipation: Drink more water, eat more fiber
- Edema: Elevate legs, reduce salt intake
Symptoms to Watch Out For
⚠️ Seek medical attention in time:
- Vaginal bleeding
- Abnormally reduced fetal movement
- Persistent abdominal pain
- Severe headache
- Blurred vision
- Obvious edema
Next Week Preview
In weeks 25-28 you will experience:
- Fetal weight exceeds 1 kg
- Enter the preparation stage for the third trimester
- May need to start preparing hospital bag
- Childbirth classes or other prenatal courses
Friendly Reminder: Gestational diabetes screening is important. Even if the result is abnormal, don't worry too much. Through diet control and exercise management, blood sugar can be well controlled in most cases.