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Third Trimester Third Trimester

Pregnancy Week 30

Your baby is the size of a Cucumber - 39.9 cm, 1319 g

30/40
weeks
~70
days to EDD
Week 1 75% complete Week 40
T1 (wk 1–13) T2 (wk 14–27) T3 (wk 28–40)

Your Baby at Week 30

Cucumber
size comparison
39.9 cm
crown-to-heel length
1.32 kg
approximate weight

Development highlights

  • Brain grows dramatically - Surface area increases as folds and grooves deepen
  • Eyes focus and respond to bright light directed at the abdomen
  • Lanugo (fine body hair) begins to disappear; scalp hair may be dense
  • Bone marrow is the sole red blood cell production site

Source: WHO Child Growth Standards; embryology references from Moore & Persaud.

Your Body in Week 30

The third trimester brings the final preparations for birth. Your body is working harder than ever - Baby is gaining 200g a week and space is running short. Use the Contraction Timer and the Kick Count Tracker to stay in tune with your baby from now on.

Common symptoms this week

Braxton Hicks contractions are very noticeable - Time them if concerned
Swelling in hands, feet, and face - Sudden or severe swelling needs urgent assessment (pre-eclampsia sign)
Sleep becomes very difficult - Side-sleeping with pillow support is essential
Heartburn peaks - Eating upright, small meals, and doctor-approved antacids help

Week 30 Checklist

  • Pack your hospital bag - Essentials for mum, baby, and partner
  • Plan your birth announcement: who to tell first, how, and when
  • Check your private health insurance cover for delivery and potential NICU stay
  • Familiarise yourself with LifeSG for registering your baby's birth after delivery
Create a free account → to save your progress and get week-by-week reminders
Nutrition spotlight - Week 30
Protein

Baby is gaining muscle mass daily. Protein needs are at their highest - 71–100g per day. Include a protein source at every meal and snack.

Appointment this week
30-week antenatal visit

Book via HealthHub app, your hospital's antenatal clinic, or your private OB. Bring your referral letter and NRIC.

Baby's Body Systems Development

How far along each major system is at week 30. Development is continuous - The chart shows when each system is actively forming and when it reaches maturity.

Neural System Mature ✓
Begins wk 3 Mature wk 28
Heart & Circulation Mature ✓
Begins wk 3 Mature wk 20
Limbs & Skeleton Mature ✓
Begins wk 5 Mature wk 16
Digestive System Mature ✓
Begins wk 5 Mature wk 24
Respiratory Actively developing
Begins wk 9 Mature wk 36
Senses Mature ✓
Begins wk 7 Mature wk 28
Appearance Actively developing
Begins wk 9 Mature wk 38
Not started
Actively forming
Mature

Third Trimester: Birth Preparation Guide

Weeks 28–40 are the final sprint. Baby is gaining weight rapidly, your body is preparing for labour, and the countdown is real. This is the time to finalise your hospital choice, pack your bag, choose your paediatrician, and learn the signs of labour. Antenatal visits increase to every 2 weeks, then weekly from week 36.

Hospital bag essentials - Singapore maternity wards

For mum
  • Nightgown x2 (front-opening)
  • Maternity pads (heavy flow)
  • Breast pads + nipple cream
  • Toiletries & lip balm
  • Phone charger
  • Snacks for labour
For baby
  • Going-home outfit (sizes 0000/000)
  • Swaddle blankets x2
  • Car seat (must install before)
  • Mittens and booties
  • Dummy (optional)
Documents
  • NRIC / passport
  • Hospital pre-registration form
  • Birth plan (2 copies)
  • Insurance card
  • OB's contact number
Go to hospital immediately if:
  • • Contractions: 5 minutes apart, 1 minute long, for 1 hour (5-1-1 rule)
  • • Waters break - Go within 1 hour regardless of contractions
  • • Heavy vaginal bleeding
  • • Baby's movements reduce significantly - Fewer than 10 in 2 hours
  • • Severe headache, vision changes, or upper abdominal pain (pre-eclampsia signs)

Frequently Asked Questions - Week 30

Real labour contractions follow a regular pattern: they come at consistent intervals, last 45–60 seconds each, and get progressively stronger, longer, and closer together over time. Braxton Hicks, by contrast, are irregular, don't intensify, and often ease when you change position or rest. Other labour signs include the 'bloody show' (blood-tinged mucus plug), your waters breaking, or persistent lower back pain that worsens in waves.

Follow the 5-1-1 rule: go to hospital when contractions are 5 minutes apart, lasting 1 minute each, for at least 1 hour. Go immediately if: your waters break (regardless of contractions), you have heavy vaginal bleeding, your baby's movements reduce significantly, or you develop a severe headache, vision changes, or upper abdominal pain. In Singapore, call your hospital's labour ward 24-hour line - They'll advise you.

The Baby Bonus scheme provides a cash gift of $11,000–$13,000 for the first two children and $13,000+ for the third and beyond, plus government matching into a Child Development Account (CDA) up to $6,000–$9,000. Register at the Baby Bonus Online portal within 60 days of birth. Read the full HeyBaby Baby Bonus guide for a step-by-step claim walkthrough.

Week 30 at a glance

Trimester Third Trimester
Week of pregnancy 30 of 40
Days until EDD ~70
Size comparison Cucumber
Length 39.9 cm
Weight 1.32 kg

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Medical disclaimer: Information on this page is for educational purposes only and does not constitute medical advice. Always consult your OB/GYN or midwife for personalised guidance. In an emergency, call 995.

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