Week 34
Your baby is the size of a Melon
Baby Size
Melon
Length
12.4 in (31.5 cm)
Weight
4.0 lb (1.8 kg)
Trimester
Third Trimester
Your Baby at Week 34
At 34 weeks, your baby is the size of a melon. The central nervous system and lungs are nearly fully mature, and the baby's immune system is getting stronger.
Key milestone: The baby's central nervous system and lungs are nearly fully mature. The immune system is stronger. Fat continues accumulating.
Your Symptoms
Movements may feel different (more rolls, less kicks) as space decreases. Pelvic pressure increases.
Tip for This Week
Your baby is nearly full-term. Review the signs of labor so you're prepared.
Your Body at Week 34
In the third trimester, your growing uterus presses against your diaphragm, stomach, and bladder. Shortness of breath, heartburn, and frequent urination are common. Your body is producing relaxin, a hormone that loosens joints and ligaments to prepare for birth.
Your baby at week 34 is the size of a Melon, measuring about 12.4 in (31.5 cm) and weighing roughly 4.0 lb (1.8 kg). Every kick, roll, and hiccup is a sign that your baby is growing strong. Soon you'll hold them in your arms.
Your Baby's Development This Week
At 34 weeks, your baby is the size of a melon. The central nervous system and lungs are nearly fully mature, and the baby's immune system is getting stronger. The key milestone this week is that the baby's central nervous system and lungs are nearly fully mature. the immune system is stronger. fat continues accumulating.
The third trimester is about preparation — your baby is practicing breathing, sucking, and swallowing for life outside the womb. Each week of this stage significantly improves their chances of a healthy start. The countdown to meeting your baby has begun.
This week's voice theme
“Cozy and cramped — running out of room but not out of love.”
Imagine hearing this every morning — a voice note from your baby that evolves week by week.
Hear your baby's voice →Frequently Asked Questions
What happens if my baby is born at 34 weeks?
Most babies born at 34 weeks do very well with minimal NICU support, though they may need help with feeding and temperature regulation.
Is it safe to travel at 34 weeks?
Many airlines restrict travel after 34-36 weeks. Check with your provider and airline before traveling.