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Quick Overview:

At week 27, your baby's brain is rapidly developing new tissue and characteristic surface grooves, the baby measures over 36cm and weighs around 875 grams, and some experts believe this is when dreaming may begin. You can expect increasing appetite, possible stretch marks, shortness of breath as the womb reaches the rib cage, and a recommended weight gain of 1 lb per week from this point forward. Boys' testes descend into the scrotum at this stage, while girls' ovaries will already contain all their follicles. Walnuts are highlighted as a standout pregnancy superfood, with scientists at the University of Scranton identifying them as the highest in polyphenolic antioxidants among all edible nuts, with antioxidant potency 2 to 15 times greater than vitamin E.

Key Takeaways
  • At week 27, a baby measures over 36cm from head to toes and weighs around 875 grams (1.92 pounds).
  • Some experts believe week 27 is when a baby begins to dream.
  • During week 27, a baby boy's testes descend into his scrotum, while a baby girl's ovaries already contain all their follicles.
  • Pregnant women are advised to gain 1 pound per week from week 27 until birth.
  • Scientists at the University of Scranton in Pennsylvania found that walnuts have the highest levels of polyphenolic antioxidants of all edible nuts.
  • The University of Scranton study found that walnuts contain antioxidants 2 to 15 times more potent than vitamin E.
Originally published March 29, 2016 · Last updated July 15, 2026

Pregnancy Diary Week 27

Discover your pregnancy journey

Pregnancy Diary Week 27

There are some experts who believe that it is the 27th week when baby starts to dream! Imagine your baby could be dreaming, and maybe you’re still dreaming about how the birth will be and how your new baby will be!!

Discover

How your baby is growing

What you can expect  at this time

A beneficial food for your pregnancy nutrition

 

Pregnancy Diary Week 27: How Is Your Baby Growing?

At the stage of week 27 in your pregnancy, your baby has lots going on in his or her head. The brain is very active at this stage. There is more brain tissue developing plus the characteristic grooves on the brain’s surface are beginning to appear.

Your baby may be starting to open his eyes at this time, and could be responding to loud noises by blinking, just as you do! Baby could be having a fit of the hiccups, which will feel like little rhythmic movements to you, and generally passes in a few minutes.

In week 27 baby measures over 36cm from his head to toes. The weight at this time is around 875 grams or 1.92 pounds.

If you are carrying a baby boy, it is during week 27 that his testes come down into his scrotum. If you are carrying a baby girl, imagine that by now her ovaries will have all their follicles.

What you can expect

You could be experiencing some shortness of breath, as your womb is up around your rib cage. Your appetite is most likely increasing and the weight gain around this time could start to result in some stretch marks. It is advisable to gain 1lb per week from now until you give birth to baby.

You are also possibly feeling little jabbing kicks from baby. When walking up the stairs or moving around in bed, some of you may be having PGP (pelvic girdle pain) or symphysis pubis dysfunction – if this is the case you may want to visit your GP or midwife, to get the pain treated effectively.

Walnuts For Pregnancy Nutrition

As you are feeling hungrier now, but you also want to eat healthily and stay at recommended weekly weight gain of 1 lb, you will want to eat food that satisfies, can seem like a treat but is also be healthy for both you and baby.

During this time as your baby’s brain is developing, any foods which are high in antioxidants are very beneficial. Foods such as spinach, apples, prunes, berries, grapes and raisins.

Additionally the groups of Omega 3 fatty acids are excellent during this time, as they are for a healthy lifestyle whether you are pregnant or not. These improve general brain function and they help restore memory. Salmon, sardines, herring, mackerel, flax oil and walnuts are high in Omega 3.

Baby Spinach And Walnut Salad

Why not treat yourself to a delicious baby spinach and walnut salad, with some cherry tomatoes, chopped scallions or shallots or onions, with (or without depending on your taste) some feta cheese(once the feta has been made from pasteurised milk of course)?

Walnuts are a wonderful source of energy, plus as well as being rich in omega 3, they are packed full of minerals, antioxidants, nutrients and vitamins.

Scientists at the Pennsylvanian, University of Scranton, have found that walnuts, out of all edible nuts, have the highest levels of popyphenolic antioxidants. As well as this the study revealed that they have levels of antioxidants 2 to 15 times more potent than vitamin E.

Walnuts are also a great source of B complex groups, phytochemical substances, calcium, iron, manganese, copper, potassium, zinc, selenium and magnesium. Walnuts have good fats, not bad fats, so you can feel comfortable to eat them. They are excellent for you and baby.

Pregnancy Diary Week 27

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DISCLAIMER

All articles on the blog and website are intended as information only. Please do not consider any of the information provided here as a substitute for medical advice. At all times seek medical advice directly with your own doctor and medical team.

ANNOUNCEMENT

This website was formerly Merrion Fetal Health. The clinic has undergone a rebrand and is now known as Merrion Ultrasound.

How big is a baby at 27 weeks pregnant?

At week 27, a baby measures over 36cm from head to toes and weighs around 875 grams (1.92 pounds).

What is happening with a baby's brain development at 27 weeks?

At 27 weeks, the brain is very active, with more brain tissue developing and the characteristic grooves on the brain's surface beginning to appear. Some experts believe week 27 is also when a baby may start to dream.

Can a baby open their eyes at 27 weeks pregnant?

Yes, at 27 weeks a baby may begin to open their eyes and could respond to loud noises by blinking. They may also experience hiccups, which feel like little rhythmic movements to the mother.

What symptoms should you expect at 27 weeks pregnant?

At 27 weeks you may experience shortness of breath as the womb rises toward the rib cage, increased appetite, stretch marks from weight gain, and jabbing kicks from the baby. Some women also experience pelvic girdle pain (PGP) or symphysis pubis dysfunction when moving.

How much weight should you gain per week at 27 weeks pregnant?

It is advisable to gain 1 pound per week from week 27 until giving birth.

What are the best foods to eat at 27 weeks of pregnancy?

Foods high in antioxidants — such as spinach, apples, berries, and walnuts — and foods rich in Omega-3 fatty acids — such as salmon, sardines, mackerel, and flax oil — are especially beneficial during week 27 as the baby's brain is actively developing.

Why are walnuts recommended during pregnancy?

Scientists at the University of Scranton in Pennsylvania found that walnuts have the highest levels of polyphenolic antioxidants of all edible nuts, with antioxidant levels 2 to 15 times more potent than vitamin E. Walnuts are also rich in Omega-3, B complex vitamins, calcium, iron, magnesium, potassium, and zinc.

What is pelvic girdle pain (PGP) in pregnancy and what should you do about it?

Pelvic girdle pain (PGP), also known as symphysis pubis dysfunction, causes discomfort when walking upstairs or moving in bed during pregnancy. If you experience it, it is advisable to visit your GP or midwife to get the pain treated effectively.