Week 37 of pregnancy
Updated 25 Oct 2026
Your baby this week
About the size of a winter melon
Source: Vinmec – Bảng cân nặng và chiều dài thai nhi theo tiêu chuẩn của WHO
Your baby's development
Your baby is about 48.6 cm long and weighs about 2.8 - 2.9 kg. Your baby is now full term, a healthy weight and mature enough to live outside your tummy.
And the information about your baby's development below will make you smile, because it's truly adorable:
- Your baby is still practising breathing amniotic fluid to prepare for the “big journey” of birth.
- Those clever hands can now grasp things nearby well: toes, nose, umbilical cord.
- Your baby practises sucking their thumb to prepare for the first feed after birth.
- Your baby's face shows more fun expressions.
Your body
To prepare for your baby's arrival, you will still have to put up with the things below – keep going, mum:
- Itchy tummy skin, and stretch marks continue to develop.
- More vaginal discharge.
- Your breasts may leak colostrum.
- You may feel Braxton-Hicks contractions.
- Baby's movements: curling up, kicking, punching.
- Cramps, trouble sleeping and loose stools may happen.
- You may go into labour: tummy pain coming in waves, vaginal discharge, vaginal bleeding, or your waters breaking.
Advice for you
Momby still advises you to keep track of your baby's movements and recognise the signs of labour. Try to keep your emotions as relaxed and comfortable as possible – a good mood will make giving birth much easier.
Also remember to attend all your antenatal check-ups to check your baby's heartbeat and whether your baby has turned head-down. 95% of babies turn head-down towards the vagina, as this is the best position for birth.
You also need to have your hospital bag ready, as you could give birth at any time.
Watch the video for this article
Signs that need a doctor now
If you notice any of the signs below, please go to the nearest health facility to be checked by a doctor.
Vaginal bleeding in pregnancy
This sign needs to be checked by a doctor. Please go to the nearest health facility now. If the bleeding is heavy or comes with severe pain or faintness, call the emergency number 115.
Source: Bệnh viện Đa khoa Tâm Anh – Các dấu hiệu nguy hiểm trong thai kỳ
Convulsions (fits)
A convulsion in pregnancy is an emergency. Family members should call 115 at once, lay the mother on her side in a safe place and get her to the nearest hospital.
Source: Bệnh viện Đa khoa Tâm Anh – Các dấu hiệu nguy hiểm trong thai kỳ
Fever in pregnancy
A temperature above 38°C counts as a fever. Please go to a health facility so a doctor can find the cause and advise on safe ways to bring it down; do not take medicine on your own.
Source: Bệnh viện Đa khoa Tâm Anh – Các dấu hiệu nguy hiểm trong thai kỳ
Leaking fluid or waters breaking
Fluid leaking from the vagina may mean the waters are leaking or have broken and needs to be checked by a doctor. Please go to a health facility soon, lying with your head low while travelling.
Source: Bệnh viện Đa khoa Tâm Anh – Các dấu hiệu nguy hiểm trong thai kỳ
Severe headache, blurred vision, sudden swelling
Headache with blurred vision, or sudden swelling of the face, hands or eyelids, can be a sign of high blood pressure in pregnancy or pre-eclampsia. This sign needs to be checked by a doctor. Please go to the nearest health facility now.
Source: Bệnh viện Đa khoa Tâm Anh – Các dấu hiệu nguy hiểm trong thai kỳ
Reduced or no fetal movement
A clear drop in the baby's movements, or no movement, needs to be checked by a doctor. Please go to the nearest health facility now rather than waiting until tomorrow.
Source: Bệnh viện Đa khoa Tâm Anh – Các dấu hiệu nguy hiểm trong thai kỳ
Severe or worsening abdominal pain
Abdominal pain that keeps getting worse, does not ease, or is severe needs to be checked by a doctor. Please go to the nearest health facility now. If the pain is severe with sweating, faintness or bleeding, call 115.
Source: Bệnh viện Đa khoa Tâm Anh – Các dấu hiệu nguy hiểm trong thai kỳ
Sources
Content advised by our doctors.
- ACOG (accessed 22 Oct 2026)
- Vinmec (accessed 22 Oct 2026)
- NHS (accessed 22 Oct 2026)
- Source for fetal size: Vinmec – Bảng cân nặng và chiều dài thai nhi theo tiêu chuẩn của WHO
- Source for the signs that need a doctor: Bệnh viện Đa khoa Tâm Anh – Các dấu hiệu nguy hiểm trong thai kỳ
This article helps you understand and prepare. It does not replace a check-up. For an answer about your own situation, please ask the doctor who is caring for you.