3rd Trimester of Pregnancy: Symptoms, Care, and Exams

Fedorchenko Olga Valeryevna

Updated on:

Certainly! Here’s the article converted into South African English to reflect local spelling, tone, and phrasing, while maintaining a friendly, informative, and professional style. It’s also adapted slightly to align with the local healthcare context where relevant.


3rd Trimester of Pregnancy: Symptoms, Care and Exams

The third trimester of pregnancy marks the final stage before childbirth. It begins at 28 weeks and typically continues until the 40th week, or until your baby is born. This period is filled with physical changes, emotional adjustments, and essential medical check-ups. Whether you’re a first-time mom or an experienced parent, knowing what to expect can help you prepare for a healthy and confident delivery.


What is the 3rd Trimester?

The third trimester is the last phase of pregnancy, running from week 28 to delivery. During this stage, your baby experiences rapid growth, and your body gears up for labour. You’ll notice new symptoms and feel more connected to the baby’s movements, especially as their kicks and rolls become more pronounced.


Common Symptoms in the 3rd Trimester

While every pregnancy is different, many women experience similar symptoms during this time. These are mainly due to hormonal changes and the growing size of your baby.

1. Shortness of Breath

As your uterus expands, it can push up against your diaphragm, making it harder to breathe deeply.

2. Frequent Urination

Pressure on your bladder increases, which may lead to more frequent trips to the loo—especially at night.

3. Back Pain

The extra weight and shift in posture often result in lower back pain and general discomfort.

4. Braxton Hicks Contractions

These are mild, irregular contractions that prepare your body for labour. They’re often described as a tightening or hardening of the belly.

5. Swollen Feet and Ankles

Due to fluid retention and changes in circulation, you might notice swelling in your lower limbs.

6. Fatigue and Trouble Sleeping

Discomfort, bathroom visits, and an active mind can make it difficult to get a good night’s sleep.

7. Heartburn and Indigestion

Hormonal changes and the baby pressing on your stomach can cause acid reflux or heartburn.

8. Leaky Breasts (Colostrum)

Your breasts might start leaking a yellowish fluid, which is the first form of breast milk.


Emotional Changes

Hormones and the anticipation of childbirth can affect your mood. Many women feel a mix of emotions, such as:

  • Anxiety or nervousness about labour and parenting
  • Mood swings or irritability
  • A strong “nesting instinct” or urge to prepare for the baby

It helps to talk about your feelings with your partner, midwife, or doctor. Support makes a big difference.


Prenatal Care in South Africa During the 3rd Trimester

In South Africa, antenatal visits become more regular in the third trimester. Most healthcare providers recommend fortnightly check-ups from 28 to 36 weeks, and then weekly visits until birth.

Why These Visits Matter:

  • Monitoring baby’s position and growth
  • Checking your blood pressure and urine for signs of conditions like pre-eclampsia
  • Reviewing your blood sugar levels (especially if you’re at risk of gestational diabetes)
  • Finalising your birth plan and deciding where you’ll give birth (public hospital, private facility, or birth centre)

Important Tests and Exams

1. Ultrasound Scan

Often done between 32 and 36 weeks to check:

  • Baby’s size and growth
  • Placental position
  • Amniotic fluid levels
  • Baby’s position (head-down or breech)

2. Group B Strep (GBS) Test

Usually done between 35 and 37 weeks to screen for this common bacterium. If GBS is found, you’ll likely receive antibiotics during labour to protect your baby.

3. Non-Stress Test (NST)

Recommended if there are concerns about your baby’s health, like reduced movement or high-risk conditions. It checks your baby’s heart rate in response to movement.

4. Blood Pressure and Urine Checks

Monitored at every visit to catch signs of pre-eclampsia or urinary tract infections.

5. Cervical Checks

Closer to your due date, your doctor may perform a pelvic exam to check for signs of labour, like cervical dilation and thinning.

Test/ExamWhen DonePurpose
Growth Ultrasound32–36 weeksBaby’s size, position, placenta
GBS Screening35–37 weeksIdentify risk of newborn infection
NST (if needed)Week 28 onwardsMonitor baby’s heart rate
Blood Pressure & UrineEvery visitCheck for pre-eclampsia and infection
Cervical Check37 weeks onwardsMonitor progress toward labour

Taking Care of Yourself: Health and Lifestyle Tips

Looking after yourself during the final trimester is crucial for a healthy delivery and recovery.

1. Eat Well

  • Include iron-rich foods like spinach, beans, and meat to prevent anaemia.
  • Choose whole grains, fresh fruit, and plenty of water to aid digestion and reduce swelling.

2. Stay Active

  • Gentle exercises like walking, prenatal yoga, or swimming can relieve aches and boost mood.
  • Avoid overexertion, especially in the heat—keep hydrated and rest often.

3. Sleep and Rest

  • Use extra pillows for support under your bump and between your legs.
  • Nap during the day if needed.

4. Stay Comfortable

  • Wear loose, breathable clothing and supportive shoes.
  • Elevate your feet to reduce swelling.

5. Prepare for Baby’s Arrival

  • Pack your hospital bag early (include ID, baby clothes, nappies, and maternity pads)
  • Finalise transport to the hospital or birthing centre
  • Talk to your provider about pain relief options and delivery preferences

When to Call Your Healthcare Provider

Get immediate medical attention if you notice:

  • Bleeding or fluid leaking from your vagina
  • Severe headaches, vision changes, or sudden swelling
  • Decreased baby movement
  • Painful or regular contractions before 37 weeks
  • Fever or chills
  • Signs of labour (water breaking, regular contractions)

Getting Ready for Labour

In the last few weeks, your baby may “drop” into your pelvis, a process called engagement, especially if it’s your first pregnancy.

Signs Labour Might Be Starting:

  • Strong, regular contractions
  • Back pain or period-like cramps
  • Mucus plug discharge
  • Waters breaking

Trust your instincts—if something feels off or if you’re unsure, it’s always better to call your doctor or midwife.


Final Thoughts

The third trimester is both exciting and challenging. It’s a time of anticipation as your body prepares for one of life’s most incredible events—bringing your baby into the world. Prioritise your health, attend all check-ups, and lean on your support system. With proper care and preparation, you’ll be ready for the journey ahead.


FAQs – South African Context

1. Can I travel in the third trimester?
Most airlines allow travel up to 36 weeks but may require a doctor’s letter. Always check with the airline and consult your healthcare provider.

2. What if I can’t afford private healthcare?
South Africa has a robust public maternity care system. Clinics and hospitals provide free antenatal and delivery services.

3. What happens if my baby is breech?
Your doctor may try to turn the baby manually or discuss the option of a C-section depending on the circumstances.


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