Navigating the Third Trimester of Pregnancy: What to Expect
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Time to read 3 min
Roopa K
B.Sc ,Certified Lactation Educator (CLC), Certified Lactation Professional (CLP), Garbh Sanskar Expert, Postpartum Health Nutritionist.
Roopa is committed to providing holistic support and guidance throughout the prenatal, postnatal, and breastfeeding journey of Indian mothers.
Table of content
1. What Happens in the Third Trimester of Pregnancy? 2. Changes in the Mother’s Body 3. Baby's Growth in the Third Trimester 4. Common Symptoms in the Third Trimester 5. Essential Tests and Checkups 6. Preparing for Labour and Delivery 7. Nutrition and Self-Care Tips 8. What Not to Do in the Third Trimester 9. When to Call the Doctor 10. FAQs
The third trimester of pregnancy (week 28 to delivery) is an exciting yet physically intense phase as you prepare to meet your baby. From rapid fetal growth to emotional ups and downs, this final stretch brings new symptoms and important milestones. Here’s a complete guide on what to expect and how to navigate it smoothly.
1. What Happens in the Third Trimester of Pregnancy?
The third trimester is all about the baby's final development and your body getting ready for labour. This is when your prenatal visits become more frequent and the countdown begins!
2. Changes in the Mother’s Body
Your body continues to adapt to support your baby’s growth and prepare for delivery. You may experience:
Increased fatigue and shortness of breath
Backaches and pelvic pressure
Swollen ankles, feet, and hands
Braxton Hicks contractions (practice contractions)
Breast tenderness and leaking colostrum
3. Baby's Growth in the Third Trimester
Your baby’s development accelerates during this phase:
Gains more fat, reaching about 2.5–3.5 kg by full term
Fully developed organs (especially lungs in final weeks)
Responds to sound, light, and touch
Moves into a head-down position, preparing for birth
4. Common Symptoms in the Third Trimester
Some symptoms may be new or more intense in this phase:
Heartburn and indigestion
Sleep disturbances
Frequent urination
Mood swings or anxiety
Constipation or hemorrhoids
Difficulty finding a comfortable position to sit or sleep
5. Essential Tests and Checkups
Expect more frequent prenatal checkups, often weekly after week 36. Common third-trimester tests include:
Growth ultrasound
Non-stress test (NST)
Blood and urine tests
Cervical checks in late pregnancy
6. Preparing for Labour and Delivery
Now is the perfect time to:
Finalize your birth plan
Pack your hospital bag
Learn signs of true labour vs Braxton Hicks
Decide on pain relief options
Tour the birthing facility, if possible
7. Nutrition and Self-Care Tips
Taking care of yourself is more important than ever.
Nutrition Tips:
Eat iron-rich foods (like spinach, lentils, beans, jaggery and dates in moderation)
Stay hydrated and eat fibre to ease constipation
Include calcium and protein-rich foods
Continue prenatal vitamins
Self-Care Tips:
Use a pregnancy pillow for better sleep
Do gentle stretches or prenatal yoga under consultation
Elevate your legs to reduce swelling
Take short naps if you’re feeling exhausted
8. What Not to Do in the Third Trimester
As your due date nears, it’s easy to feel overwhelmed - but try not to give in to fear or panic. Avoid watching stressful or graphic delivery videos online, or content that makes you feel anxious. Stress and panic can negatively affect both you and your baby. Instead, focus on positive stories, trusted medical advice, and preparing yourself calmly and confidently. Speak to your doctor if you have any doubts.
9. When to Call the Doctor
Get medical attention right away if you experience:
Heavy bleeding or fluid leakage
Persistent or painful contractions
Sudden swelling in face or hands
Vision changes or headaches
Reduced baby movements
FAQs
Q1. How many weeks is the third trimester of pregnancy?
The third trimester starts at 28 weeks and lasts until birth - typically around 40 weeks.
Q2. What are Braxton Hicks contractions?
These are mild, irregular “practice” contractions that help prepare your uterus for labour. They are usually not painful.
Q3. How can I sleep better in the third trimester?
Use a pregnancy pillow , lie on your side (preferably left), and avoid heavy meals before bed.
Q4. What is the normal baby weight in the third trimester?
Most babies gain weight rapidly and weigh around 2.5 to 3.5 kg by full term.
Q5. Can I exercise during the third trimester?
Yes, gentle walking, stretching, or prenatal yoga (with your doctor’s approval) can be helpful for circulation and energy.
Key Takeaways
The third trimester of pregnancy spans week 28 until delivery. Your baby matures rapidly and your body prepares for labour. Common symptoms include fatigue, back pain, and swelling. Keep up with checkups, eat well, and rest when you can. Know the signs of labour and be ready to reach the hospital. Most importantly - do not panic. A calm mind helps you and your baby stay healthy and better prepared for delivery.