you're 34 weeks pregnant.
last revised · baby is about 45 cm (17.7") · 2150 g (75.8 oz)
At 34 weeks pregnant, your baby is about 45 cm and 2150 g — Most of the time the baby's eyes are open while awake and closed while asleep.
about the size of a…
Most of the time the baby's eyes are open while awake and closed while asleep. Lungs are continuing to mature.
this week's highlights
- Eyes open while awake
- Lungs nearly mature
- Vernix begins thinning
- Sucking reflex strong
how your baby looks
Plump and pink. Eyes are clear, hair is thicker, and fingernails reach the fingertip. Vernix coat starts thinning.
body in focus
- head
- Eyes open while awake, close while asleep.
- body
- Vernix layer begins to thin.
- hands
- Strong sucking reflex — fingers reach to the mouth often.
- feet
- Kicks are powerful and visible through the belly.
what's happening in your body
Bump is heavy. Some experience light-headedness from blood pressure dips. Practice contractions become more frequent.
symptoms at 34 weeks
- Light-headedness on standing
- Blood pressure dips and blood pooling in the legs can cause head rushes when you stand quickly. Rise in stages and sit back down at the first sign of dizziness.
- Stronger practice contractions
- Braxton Hicks can now feel firm enough to make you pause. They should still be irregular and settle with rest — time them if unsure, and call your maternity unit about any regular pattern before 37 weeks.
- Pelvic floor heaviness
- A bearing-down heaviness after time on your feet reflects the baby's weight on the pelvic floor. Keep up daily pelvic floor exercises and take genuine off-your-feet breaks.
- Blurry moments and tired eyes
- Fluid changes can make vision briefly soft, especially with contact lenses. Persistent blurring, flashing lights, or spots need a same-day call to your midwife or doctor.
- Leaking with laughter
- The pelvic floor is under maximum load now. Pads help in the short term; the exercises help for good.
- Difficulty finding any comfortable position
- Sitting, standing, and lying all have a time limit now. Rotating positions hourly, plus a birth ball for sitting, keeps discomfort spread rather than concentrated.
gentle tips
- Drink fluids constantly; rest when needed.
- Practice breathing techniques learned in childbirth class.
- Pack and double-check the hospital bag.
- Discuss when to call the hospital with your provider.
- Confirm postpartum support (food, help, sleep).
your week 34 checklist
- Start perineal massage a few times a week if you plan to try it — from now is the evidence-based window.
- Agree the exact plan for older children and pets when labour starts, including a backup person.
- Pre-register or complete any hospital admission paperwork your unit allows in advance.
- Sit on a birth ball daily — it encourages good baby positioning and eases pelvic pressure.
what to expect next
Babies born at 34 weeks usually do well with brief NICU support. Term begins at 37.
common questions at week 34
How big is the baby at 34 weeks?
At 34 weeks, the baby measures about 45 cm and weighs approximately 2150 g (45 cm (17.7") · 2150 g (75.8 oz)).
What is developing at 34 weeks?
Plump and pink. Eyes open while awake, close while asleep. Key milestones this week include: Eyes open while awake; Lungs nearly mature; Vernix begins thinning; Sucking reflex strong.
What symptoms are common at 34 weeks pregnant?
Bump is heavy. Some experience light-headedness from blood pressure dips. Practice contractions become more frequent.
What should I do at 34 weeks pregnant?
Babies born at 34 weeks usually do well with brief NICU support. Drink fluids constantly; rest when needed. Practice breathing techniques learned in childbirth class. Pack and double-check the hospital bag.
What does it mean when the baby drops or engages?
Engagement means the baby's head settles down into the pelvis ready for birth — you may notice easier breathing but heavier pelvic pressure and more bathroom trips. First babies often engage from around 34 to 38 weeks, while subsequent babies may not drop until labour begins. Engagement is not a countdown timer: it can happen weeks before labour or hours before.
When should I go to the hospital with contractions?
General guidance for a first baby is to call your maternity unit when contractions are regular and roughly every five minutes, lasting about a minute, for at least an hour — but call earlier if your waters break, you see bleeding, the baby's movements reduce, or you simply feel something is wrong. Every unit prefers a phone call first so they can advise based on your situation. Trust the instruction you are given over any app or formula.
What happens if my baby is still breech — what is an ECV?
If your baby remains breech around week 36, you will usually be offered an external cephalic version (ECV) — an obstetrician uses firm hand pressure on your bump to encourage the baby to somersault head-down, with monitoring before and after. It succeeds roughly half the time and is considered safe in the right candidates. If it does not work or is not suitable, your team will talk through a planned caesarean or, in some cases, a vaginal breech birth.
helpful tools
- Kick Counter
Daily kick counts are an important reassurance in the third trimester.
- Contraction Timer
Time contractions and track frequency when the moment comes.
- Hospital Bag
Curated packing checklist for labor and delivery.
Medically aligned with guidance from WHO, NHS and ACOG. How we write.