Trimester 3
30 Weeks Pregnant
In week 30, your baby is putting on weight quickly and fine-tuning their lung and brain function. They are becoming more responsive to light and sound from the outside world as they prepare for the big transition to life outside.
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Your baby is the size of a Cabbage
40 cm
Length
1.3 kg
Weight
Week 1Week 13 - End of Trimester 1Week 27Week 42
Baby's Development This Week
In week 30, your baby is putting on weight quickly and fine-tuning their lung and brain function. They are becoming more responsive to light and sound from the outside world as they prepare for the big transition to life outside.
- The bone marrow is fully responsible for red blood cell production.
- The lanugo (fine body hair) begins to disappear.
- The fetus practices 'breathing' amniotic fluid regularly.
- Eyes can focus and track light.
- A pint of amniotic fluid surrounds the baby.
- About 39.9cm — the size of a large cabbage.
Your Symptoms at Week 30
As you progress through week 30, you may feel more physical strain as your baby grows. Back pain and difficulty finding a comfortable sleeping position are common. Keep your feet up when you can and take pride in how far you've come in this incredible process.
Fatigue
Rest when possible; accept help from others. (moderate)
Rest when possible; accept help from others. (moderate)
Heartburn and indigestion
Eat small meals; sleep with head elevated. (moderate)
Eat small meals; sleep with head elevated. (moderate)
Swelling in feet and ankles
Elevate feet; avoid standing for long periods. (moderate)
Elevate feet; avoid standing for long periods. (moderate)
Mood swings and anxiety
Talk to your partner or a counselor; prenatal anxiety is common. (moderate)
Talk to your partner or a counselor; prenatal anxiety is common. (moderate)
When to Call Your Doctor
- Sudden or severe swelling (especially face and hands)
- Persistent upper abdominal pain
- Decreased fetal movement
- Fluid leaking from vagina
Week 30 Checklist
- ✓Continue biweekly prenatal visits (essential)
- ✓Research breastfeeding support (lactation consultants, La Leche League) (recommended)
- ✓Finalize the nursery setup (recommended)
- ✓Practice breathing techniques for labor (recommended)
Frequently Asked Questions
Continue Your Pregnancy Journey — Week 30
← →
Week 29 of Pregnancy
Review what happened last week with your baby's development
← →
Week 31 of Pregnancy
What's coming next week — new developments and symptoms to expect
Guide
Third Trimester Overview
Everything happening during your third trimester — symptoms, tests, and milestones
Symptom
Braxton Hicks Contractions
How to tell practice contractions from the real thing
Symptom
Swollen Feet & Ankles
Normal swelling vs. warning signs of preeclampsia
Tool
Kick Counter
Monitor baby kicks — 10 movements in 2 hours is a healthy baseline
Related
Group B Strep Test
Routine test between weeks 35–37 — what a positive result means
Nutrition
Third Trimester Nutrition
Foods for energy, labor prep, and healthy final weight gain
Medical Disclaimer: This content is for informational purposes only and is not a substitute for professional medical advice. Always consult your healthcare provider for personalized guidance about your pregnancy.