By Nobel Hygiene Team | Last Updated: December 12, 2025

Pregnancy Month 4 Guide: Symptoms, Baby Growth & Care

Q: What are the symptoms in the 4th month of pregnancy?

In the fourth month, many women experience increased energy, visible bump growth, breast changes, reduced nausea, mild backaches, constipation, and possible early baby movements. Skin changes such as a pregnancy glow or pigmentation are also common. Severe pain, heavy bleeding, or unusual swelling should be evaluated by a doctor.

Q: How big is my baby at 4 months pregnant?

By the end of the fourth month, the baby measures about 11–12 cm and weighs roughly 100 grams, similar to the size of an avocado. Facial features are more defined, fingerprints begin forming, and fine hair called lanugo covers the body.

Q: Can you feel the baby move in the 4th month?

Some women may feel gentle movements known as quickening during the fourth month, especially if they have been pregnant before. First-time mothers often feel movement later, typically between weeks 18–20.

Q: What foods should I eat during the 4th month of pregnancy?

Focus on iron-rich foods such as spinach, lentils, and poultry; protein sources like eggs, lean meat, and tofu; calcium-rich foods including dairy or fortified alternatives; and fiber-rich fruits and vegetables. Staying hydrated helps prevent constipation and supports healthy pregnancy progress.

Q: What foods should I avoid in Month 4 of pregnancy?

Avoid raw or undercooked meat and seafood, high-mercury fish, unpasteurized milk and cheese, alcohol, smoking, and excessive caffeine. These can increase the risk of foodborne illness or affect fetal development.

Q: What tests are done in the 4th month of pregnancy?

During the fourth month, doctors may recommend screening tests such as the quad or triple test to assess the risk of chromosomal conditions. Routine prenatal checkups monitor blood pressure, baby’s heartbeat, and overall growth, with ultrasounds advised if needed.

Q: Is traveling safe during the 4th month of pregnancy?

Travel is generally safe during the second trimester for low-risk pregnancies. Use seatbelts properly, stay hydrated, take breaks to walk during long journeys, and consult your doctor before making travel plans.

Q: How much weight should I gain by 4 months pregnant?

By the fourth month, most women gain around 2–4 kg, depending on pre-pregnancy weight and health. Weight gain usually becomes more consistent in the second trimester. Focus on nutrient-rich foods rather than calorie counting.

Q: Can I sleep on my back in the 4th month of pregnancy?

By the second trimester, it is best to avoid lying flat on your back for long periods, as this can reduce blood flow. Sleeping on your left side is recommended for better circulation and comfort.

Q: What exercises are safe in the 4th month of pregnancy?

Safe exercises include walking, swimming, stationary cycling, and prenatal yoga. Avoid high-impact activities, heavy lifting, or exercises with a risk of falling. Always consult your doctor before starting or changing an exercise routine.

Month 4 pregnancy symptoms including increased energy, reduced nausea, and visible baby bump.

Congratulations, mumma—you’ve officially entered the second trimester! Month 4 is often called the “golden period” of pregnancy because many early discomforts fade, energy returns, and your bump begins to show.

By Month 4, your baby is developing facial features, fingerprints, and fine hair—an exciting time, indeed! This guide will explain 4th month pregnancy symptoms and how you can support baby growth in the fourth month with the right nutrition and care.

Pregnant woman in Month 4 smiling while touching her growing baby bump outdoors during second trimester.

4th Month of Pregnancy Symptoms

You might notice:

Increased Energy: Many moms feel less fatigued as nausea improves.
Breast Growth: Breasts continue to enlarge and may feel heavier.
Round Ligament Pain: Stretching uterine ligaments may cause sharp, brief pains in your lower belly.
Constipation & Heartburn: Digestive slowdown plus pressure on your stomach may trigger discomfort.
Nasal Congestion: Increased blood volume may cause swelling in your nasal passages.

When to Visit Your Doctor

If you have severe pain, heavy bleeding, sudden headaches/vision changes, or sudden swelling in the face, hands, or feet, please visit your doctor right away.

What’s Happening in Your Body

Illustration of uterus growth and body changes in Month 4 of pregnancy, showing baby development inside the womb.

Uterus growth continues and rests above the pubic bone.

Increased blood volume: This can make you feel warmer and flushed.
Hormones: Hormones start to stabilize, reducing nausea and mood swings.
Belly growth: Your belly becomes more prominent, making pregnancy more visible to others.
Think of month 4 as “springtime” for your pregnancy—growth is steady, and energy is blooming. If you're interested in learning about early pregnancy symptoms, especially during the first month, check our detailed guide.

How Your Baby is Growing

Your little one is making significant progress in month 4!

Size

About 11–12 cm—roughly the size of an avocado and weighing around 100 grams.

Development Milestones

Facial features become more defined.
Fingerprints start forming.
Fine hair (lanugo) begins to cover the body for warmth.
Muscles strengthen, making movements more frequent (though still subtle).

Nutrition & Self-Care

Prenatal Vitamins

Continue folic acid, iron, and calcium supplements

Eat Nutrient-Rich Foods

Lentils, spinach, and poultry to support blood production
Include lean proteins like eggs, fish, and tofu for growth
Add fiber-rich foods to ease constipation

Hydrate & Rest

Stay hydrated with 8–10 glasses of water daily

Gentle Exercise

Continue moderate exercise like walking or prenatal yoga
Practice good posture to ease back discomfort
Wear supportive bras for breast comfort

Safety Guidelines

Avoid alcohol, smoking, and high-mercury fish
Try not to lie flat on your back for long periods
Limit caffeine to under 200 mg/day

Doctor’s Checklist

Tests & Scans

Quad screen or triple test for genetic and neural tube defects
Routine prenatal check-up to measure uterus size and hear the heartbeat

Questions to Ask:

When will I feel consistent movements?
What's my ideal weight gain rate for this trimester?
Should I adjust my prenatal vitamins or supplements?

Reminders

Keep up with daily prenatal vitamins
Learn about the 3rd month of pregnancy, baby development, and care tips
Continue maintaining your pregnancy journal to track symptoms and milestones

FAQs

1. What are the symptoms in the 4th month of pregnancy?

In the 4th month, most women experience increased energy, visible bump growth, breast changes, reduced nausea, mild backaches, constipation, and possible early baby movements (quickening). Skin changes like a “pregnancy glow” or pigmentation spots are also common. Severe pain, heavy bleeding, or swelling should be reported to a doctor immediately.

2. How big is my baby at 4 months pregnant?

By the end of Month 4, your baby measures about 11–12 cm and weighs around 100 grams—roughly the size of an avocado. At this stage, facial features are more defined, fingerprints form, and fine hair (lanugo) covers the body. Your baby is becoming more active, although movements may only be faintly felt.

3. Can you feel the baby move in the 4th month?

Some women feel their baby move in the 4th month, especially if they’ve been pregnant before. This sensation, called “quickening,” feels like gentle flutters. First-time mothers often feel movement a bit later, between weeks 18–20. Baby movement varies and depends on position, placenta placement, and maternal sensitivity.

4. What foods should I eat during the 4th month of pregnancy?

Focus on iron-rich foods (spinach, lentils, poultry), protein (eggs, lean meat, tofu), calcium (dairy, fortified plant milks), and fiber-rich fruits and vegetables. Staying hydrated helps prevent constipation. Avoid alcohol, high-mercury fish, raw meats, unpasteurized dairy, and limit caffeine to 200 mg/day. A balanced diet supports steady baby growth.

5. What foods should I avoid in Month 4 of pregnancy?

Avoid:

Raw or undercooked meat and seafood
High-mercury fish (shark, swordfish)
Unpasteurized milk and cheese
Alcohol and smoking
Excessive caffeine

These can pose risks such as foodborne illness or developmental issues. Always check food labels and practice safe cooking methods.

6. What tests are done in the 4th month of pregnancy?

Month 4 may include the quad screen or triple test to assess the risk of chromosomal abnormalities and neural tube defects. Routine prenatal check-ups monitor your baby’s heartbeat, growth, and your blood pressure. Your doctor may also recommend an ultrasound if needed to check fetal development.

7. Is traveling safe during the 4th month of pregnancy?

Travel is generally safe during the second trimester if your pregnancy is low-risk. Use a seatbelt correctly, stay hydrated, take breaks to walk, and wear comfortable clothing. Long-haul flights require more movement to prevent blood clots. Always confirm travel plans with your doctor before booking.

8. How much weight should I gain by 4 months pregnant?

By the 4th month, most women gain 2–4 kg, depending on pre-pregnancy weight and health. The second trimester typically sees more consistent weight gain, around 0.4–0.5 kg per week. Focus on nutrient-rich foods rather than calorie counting, and discuss your progress with your doctor at each visit.

9. Can I sleep on my back in the 4th month of pregnancy?

By the second trimester, it’s best to avoid lying flat on your back for long periods, as the growing uterus can press on major blood vessels, reducing blood flow. Sleeping on your left side is ideal for circulation and nutrient delivery to your baby. Use pillows for support.

10. What exercises are safe in the 4th month of pregnancy?

Safe activities include walking, swimming, stationary cycling, and prenatal yoga. Avoid high-impact sports, heavy lifting, and exercises that risk falling. Always warm up, stay hydrated, and listen to your body—stop if you feel dizzy, short of breath, or in pain. Consult your doctor before starting any new workout routine.

Conclusion

They don’t call Month 4 the golden period for nothing—this is the time to enjoy food, outings, and maybe even a trip! While you enjoy your new-found energy, don’t forget to stay consistent with your supplements and exercise as your body continues to fuel your baby’s growth.

Next up? In month 5, you’ll be halfway through your pregnancy, and you’ll start to “look” more pregnant with a bigger bump. Your baby will start developing sense and muscles and you may even start to feel them kick more distinctly—something beautiful to look forward to! Until then, take it easy, and we’ll see you again really soon!

👉 Next: Explore Month 5 Pregnancy Guide

Filter by Month