Everything you need to know about week 27 of pregnancy

27th week of pregnancy (27 weeks pregnant)

Over the past few weeks, your baby has grown significantly in both size and weight – it now measures around 36–38 cm, about as long as a courgette. The head is also becoming increasingly well-proportioned. In week 27 of pregnancy, your body is working at full speed: your child’s movements are getting stronger, and you can feel it preparing everything it needs for life outside – from sucking to swallowing.

You may notice practice contractions, back pain or tender breasts – all perfectly normal signs that your body is preparing for birth. Your blood volume, metabolism and digestion are also working hard now to provide the best possible care for you and your baby.

In your baby's lungs, the air sacs are forming – they are beginning to unfold and are preparing to close for the first time after birth. At the same time, new cells are growing every day to further mature your child's body.

Many expectant mums experience a mixture of calm, anticipation and a longing for structure during this week – you might feel the urge to organise something in your home or to focus more intensely on preparing for the birth.

The next ultrasound or a look at current information about the development can give you additional confidence and reassurance – after all, a little human being is growing there, ready for life.

Development of the baby in the 27th week of pregnancy

At 27 weeks pregnant, your baby is about 36 to 38 cm long and weighs around 1000 to 1200 grams – roughly the size of a small cauliflower. Your baby is now looking more and more like a newborn: the body is filling out with fat tissue, the skin is becoming smoother and the proportions are more balanced.

The lungs continue to develop and practise their first breathing movements – even though oxygen supply is still provided entirely via the placenta. The baby can now have hiccups, which you may notice as a rhythmic twitching in your belly.

The brain is growing rapidly and forming new connections. Particularly fascinating: your baby's senses are becoming ever more refined. It can now perceive bright light through the abdominal wall, react to loud noises, and distinguish between the mother's voice and that of the partner.

The eyes are also opening more and more frequently. The retina is beginning to develop – your child is increasingly responding to stimuli from the surroundings. This phase marks the transition from the second to the third trimester – a true milestone!

Your body at 27 weeks pregnant

At 27 weeks pregnant, your body is on the verge of entering the third trimester – and you can definitely feel it. Your uterus now reaches about halfway between your breastbone and your navel, and your baby bump is impossible to miss.

Many pregnant women report back pain, heartburn, an increasing feeling of pressure in the pelvis or night-time calf cramps during this phase. These symptoms are mainly caused by your baby’s growth and the hormonal loosening of the ligaments.

Fluid retention in the hands, legs or feet is also not uncommon – take breaks, put your feet up and make sure you get enough exercise.

Another common issue is shortness of breath: your baby needs more space, which causes your organs to shift – including the diaphragm, which is responsible for breathing.

In addition, your blood sugar levels may fluctuate more at this stage. Therefore, make sure to have regular, balanced meals to stabilise your energy levels. Many women also find this week to be more emotionally intense – a good moment to consciously pay attention to your inner balance.

The pram you've always wanted.

Tips for the 27th week of pregnancy

• 💡 1. Pay attention to good posture: As your bump grows, your centre of gravity shifts – this can put strain on your back and pelvis. In everyday life, pay attention to maintaining an upright posture and make sure you are well supported when sitting.
• 💡 2. Movement remains important: Light exercise such as walking, pregnancy yoga or swimming can relieve discomfort such as back pain, water retention or digestive problems.
• 💡 3. Drink enough fluids: At least 1.5 to 2 litres of water a day help your circulation, digestion, and prevent dizziness or headaches.
• 💡 4. Small, nutrient-rich meals: Your metabolism is running at full speed. Small, regular portions keep your blood sugar levels stable and prevent cravings.
• 💡 5. Improve sleep hygiene: Do you wake up at night or find it hard to fall asleep? A pillow behind your back or between your legs can help. Rituals such as a warm shower or calming music can also provide support.
• 💡 6. Initiate birth preparation: Now is a good time to find out about antenatal classes, choosing a hospital, midwifery support, or writing a birth plan.
  
  
  
  

The most frequently asked questions about the 27th week of pregnancy

What happens in the case of a premature birth at 27 weeks of pregnancy?

A premature baby born in week 27 already has good chances of survival thanks to modern medicine.

How much weight gain is typical for a pregnant woman at this week?

Many pregnant women have gained about 7–10 kg in weight by the 27th week of pregnancy – depending on their physique.

What does the "final sprint" of pregnancy mean?

With week 27 of pregnancy, the final stretch begins – the last trimester is approaching, and many important changes are now taking place in the baby.

What role does the amniotic fluid play now?

The amniotic fluid protects the baby, supports lung maturation, and helps with the development of senses and movements.

What is developing in the baby’s brain?

This week, brain grooves are forming – they indicate the structural progress in the baby's brain.

What information should mums know right now?

Now is a good time for information on birth preparation, breastfeeding, and the last weeks of pregnancy.

Why do pressure sensations sometimes occur?

The growing belly and the baby put pressure on the pelvis, blood vessels, and organs – this is completely normal.

What changes occur in the baby’s eyes?

The eyelids open for the first time – a big step towards seeing the world after birth.

What is the significance of bone marrow now?

The bone marrow increasingly takes over blood formation, an important advancement in the immune system.

What does the baby's skin look like at the moment?

The skin still shows fine grooves, but will soon become smoother due to fat pads and the surface.

Is an antenatal class already worthwhile?

Yes – now is a good time to start an antenatal class and organise your thoughts about the birth.

What does it mean when nothing happens?

If you feel your baby less at times, it is usually harmless – if you are unsure, speak to your doctor.

The dream buggy you always wanted.

Back to the previous week of pregnancy.

Continue to the next week of pregnancy.