The third trimester of pregnancy (weeks 28 to 40) marks the final and most exciting stage of your pregnancy journey. Your baby is growing rapidly, your body is preparing for labour, and you are just weeks away from meeting your little one. While this phase can be physically demanding and emotionally overwhelming, understanding the changes taking place can help you feel more confident and prepared.

At My Womb Maternity Care, our team of maternity care professionals, experienced postpartum caregivers, and healthcare experts are committed to supporting mothers before and after childbirth. This guide explains everything you need to know about the third trimester, common pregnancy symptoms, baby development, and when to seek medical advice.

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Third Trimester at a Glance

• Duration: Week 28 to Week 40
• Baby is Full Term: After 37 completed weeks
• Average Baby Weight at Birth: 2.5–4 kg
• Average Baby Length: 48–55 cm

During this stage, your baby's organs mature, body fat increases, the brain develops rapidly, and your body prepares for labour and delivery.

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Changes in the Mother's Body During the Third Trimester

As your baby grows bigger, your body works harder to support the pregnancy. Many of the symptoms you experience are completely normal.

1. Growing Belly and Abdominal Pain

Your uterus expands significantly, stretching the round ligaments that support it. This may cause:

• Sharp pain on either side of the abdomen
• Mild cramping
• Lower abdominal discomfort

Getting adequate rest, avoiding sudden movements, and maintaining good posture may help reduce discomfort.

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2. Increased Fatigue

The third trimester often brings extreme tiredness because your body is supporting rapid fetal growth.

To manage fatigue:

• Eat small, nutritious meals frequently.
• Stay hydrated.
• Get enough sleep.
• Continue gentle exercises like walking or prenatal yoga after consulting your doctor.

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3. Heartburn

As your uterus enlarges, it pushes against your stomach, causing acid reflux and heartburn.

Helpful tips include:

• Eat smaller meals.
• Avoid spicy and oily foods.
• Don't lie down immediately after eating.
• Consult your obstetrician if symptoms become severe.

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4. Back Pain

Hormonal changes loosen your joints while your growing belly shifts your centre of gravity.

You may experience:

• Lower back pain
• Pelvic discomfort
• Muscle strain

Proper posture, pregnancy support belts, prenatal exercises, and physiotherapy may provide relief.

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5. Swollen Feet and Varicose Veins

Increased blood circulation and pressure on the veins may cause:

• Swollen ankles
• Swollen feet
• Varicose veins

Elevating your legs, staying active, and wearing compression stockings may help.

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6. Stretch Marks

Stretch marks appear as the skin expands rapidly.

Although genetics largely determine their appearance, regular moisturising may improve skin comfort and elasticity. Remember, these marks are a beautiful reminder of your pregnancy journey.

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7. Braxton Hicks Contractions

From around 32 weeks, you may notice occasional tightening of your uterus known as Braxton Hicks contractions.

These "practice contractions":

• Are irregular
• Usually painless
• Do not increase in intensity
• Help prepare your body for labour

If contractions become regular, painful, or occur every few minutes, contact your healthcare provider immediately.

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8. Sleep Disturbances and Vivid Dreams

Many mothers experience:

• Difficulty sleeping
• Frequent urination
• Baby movements at night
• Unusual or vivid dreams

These changes are common during late pregnancy and usually improve after delivery.

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Baby Development During the Third Trimester

During weeks 28 to 40, your baby's growth accelerates dramatically.

From approximately the size of an eggplant at the beginning of the trimester, your baby grows to the size of a watermelon by full term.

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Bone Development

Your baby's bones continue to harden by absorbing calcium from your body.

Include calcium-rich foods such as:

• Milk
• Yogurt
• Cheese
• Almonds
• Green leafy vegetables

Your doctor may also recommend calcium supplements.

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Brain Growth

The third trimester is a period of rapid brain development.

Your baby's brain begins:

• Forming millions of neural connections
• Regulating body temperature
• Developing sleep cycles
• Practising blinking
• Dreaming

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Skin, Hair and Nails

Around 32 weeks:

• The skin becomes less transparent.
• Fat accumulates beneath the skin.
• Hair and nails continue growing.

By 36 weeks, your baby gradually sheds the fine hair (lanugo) and protective coating (vernix).

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Digestive System

The digestive tract matures, and your baby begins storing meconium, the first stool passed after birth.

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Five Senses

Your baby's senses become highly developed.

Your little one can:

• Hear your voice
• Recognise familiar sounds
• Sense light and darkness
• Taste flavours from your diet
• Respond to touch

Talking, singing, and reading to your baby can strengthen early bonding.

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Baby's Position Before Birth

By 36 weeks, most babies naturally move into a head-down position, preparing for vaginal birth.

If your baby remains in a breech or transverse position, your obstetrician will discuss the safest delivery options, which may include attempting to turn the baby or planning a Caesarean section if medically necessary.

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When Is the Baby Full Term?

After 37 completed weeks, your baby is considered full term.

By this stage:

• Lungs are mature.
• Major organs function independently.
• The immune system continues developing.
• The baby is ready for birth.

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When Should You Contact Your Doctor?

Seek immediate medical attention if you experience:

• Regular painful contractions
• Heavy vaginal bleeding
• Leakage of fluid
• Reduced baby movements
• Severe headache
• Blurred vision
• Persistent abdominal pain
• Sudden swelling of the face or hands
• High fever

Early medical care can protect both mother and baby.

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How My Womb Maternity Care Supports Mothers

Pregnancy is only the beginning of motherhood. Recovery after childbirth is equally important.

My Womb Maternity Care offers comprehensive maternity and postpartum support, including:

• Traditional Kerala Ayurveda postpartum care
• Residential postpartum care
• Newborn baby care
• Lactation and breastfeeding support
• Mother and baby wellness guidance
• Postnatal recovery assistance
• Emotional support for new mothers
• Professional caregiver services in Kerala

Our care programmes combine time-tested Kerala postpartum traditions with modern medical safety practices, helping mothers recover comfortably while ensuring the best start for their newborns.

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Frequently Asked Questions (FAQs)

Is fatigue normal during the third trimester?

Yes. Increased fatigue is common because your body is supporting rapid fetal growth and preparing for labour.

What are Braxton Hicks contractions?

Braxton Hicks contractions are irregular, painless uterine contractions that help prepare the uterus for labour. They are different from true labour contractions.

How can I reduce heartburn during pregnancy?

Eating smaller meals, avoiding spicy foods, staying upright after meals, and following your doctor's advice can help reduce heartburn.

When is my baby considered full term?

A pregnancy is considered full term after completing 37 weeks.

When should I go to the hospital?

Go to the hospital if you experience regular contractions, water breaking, heavy bleeding, or reduced fetal movements.

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Preparing for Birth and Beyond

The third trimester is filled with anticipation, excitement, and preparation. Every kick, stretch, and milestone brings you closer to meeting your baby.

At My Womb Maternity Care, we are honoured to support mothers throughout pregnancy, childbirth, and postpartum recovery. With expert guidance, compassionate caregivers, and holistic maternity care, we help families begin this beautiful new chapter with confidence.