Week 30 of pregnancy
Updated 25 Oct 2026
Your baby this week
About the size of a cabbage
Source: Vinmec – Bảng cân nặng và chiều dài thai nhi theo tiêu chuẩn của WHO
Your baby's development
Your baby is about 40 cm long, the size of a cabbage, and weighs on average about 1.3 kg. Your little one keeps learning and developing lots of exciting things. Your baby's eyes can sense light at close range and tell light from dark.
Your baby's brain starts forming folds so it can hold more brain cells. Oh, so the geniuses are starting to be made, parents.
In this week of pregnancy your baby will move less because space is limited. The hands are fully developed, and fingernails have appeared. You may see your baby grabbing their feet on the ultrasound. Be sure to show your partner, so baby's dad knows that love has created yet another miracle!
Your body
Your uterus keeps growing, putting pressure on your abdomen and chest. You may feel tired, stressed, irritable and anxious. Back pain, cramps and frequent trips to the toilet increase day by day.
Your legs and ankles may swell more. If the swelling is severe, see a doctor straight away.
Advice for you
Getting enough sleep is essential for you at this stage. Go to bed a little earlier and get up a little later. You can take a few short naps during the day.
You can sleep lying on your left side. Do Kegel exercises (Kegel exercises are very easy and can be done anywhere without anyone knowing. All you have to do is feel the muscles you usually squeeze when holding in a wee. Squeeze them for 3 seconds, then relax for 3 seconds. Don't tighten your tummy or thighs while doing this. )
At this stage you need regular antenatal check-ups about every 2 weeks to check your baby's growth as well as your blood pressure, blood sugar and weight gain, especially if you have gestational diabetes. So make sure you attend all your antenatal check-ups.
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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.
- NHS (accessed 22 Oct 2026)
- Vinmec (accessed 22 Oct 2026)
- Vinmec (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.