35 weeks pregnant
Your baby is about 46 cm and 2.4 kg; the window for the GBS test opens.
At week 35, your baby gains weight quickly – up to 200 grams a week. Screening for group B streptococcus (GBS) is done around this time.
This week’s ultrasound image
Expected ultrasound appearance and measurements at week 35 (illustrative, to-scale drawing).
Abbreviations on the screen
- GS
- Gestational sac diameter
- YS
- Yolk sac
- CRL
- Crown–rump length
- NT
- Nuchal translucency
- BPD
- Biparietal diameter (head width)
- HC
- Head circumference
- AC
- Abdominal circumference
- FL
- Femur (thigh bone) length
- EFW
- Estimated fetal weight
- FHR
- Fetal heart rate (beats per minute)
- GA
- Gestational age (weeks + days)
- UA PI
- Umbilical artery Doppler resistance (PI)
Length (head to heel)
45.9 cm
Head diameter
89 mm
Head circumference
318 mm
Femur length
67 mm
Estimated weight
2383 g
Heart rate
135 bpm
UA PI
0.84
How big is your baby this week?
About the size of a leek
What can be seen on the ultrasound?
BPD is about 89 mm, HC about 318 mm, AC about 311 mm and FL about 67 mm. The estimated weight is around 2,400 grams.
Your baby’s development
Your baby is about the length of a leek. The kidneys are fully developed and the liver can process waste products. With less room to move, kicks give way to wriggles and stretches.
Changes in your body
You need to pass urine more often. When your bump drops, breathing may become easier, but pelvic pressure increases.
Check-ups at this stage
- GBS (group B streptococcus) screening (weeks 35–37)
- Routine check: blood pressure, weight, urine
- Check-ups usually every week
Tips for this week
- Give your hospital bag a final check
- Note the signs of labour (regular contractions, waters breaking, bleeding)
- Make rest a priority
When should you see your doctor?
Seek care straight away if you have reduced baby movements, bleeding, leaking fluid, regular contractions that get closer together, a severe headache or blurred vision.
Growth by week
Values are averages; differences of a few days or a few millimetres between babies are normal.
| Pregnancy weeks | Crown–rump length (cm) | Weight (g) |
|---|---|---|
| Week 4 | — | — |
| Week 5 | — | — |
| Week 6 | 4 mm | — |
| Week 7 | 10 mm | — |
| Week 8 | 16 mm | 1 g |
| Week 9 | 23 mm | 2 g |
| Week 10 | 32 mm | 4 g |
| Week 11 | 43 mm | 8 g |
| Week 12 | 55 mm | 14 g |
| Week 13 | 68 mm | 23 g |
| Week 14 | 85 mm | 43 g |
| Week 15 | 100 mm | 70 g |
| Week 16 | 115 mm | 100 g |
| Week 17 | 128 mm | 140 g |
| Week 18 | 140 mm | 190 g |
| Week 19 | 152 mm | 240 g |
| Week 20 | 25.6 cm | 300 g |
| Week 21 | 26.7 cm | 360 g |
| Week 22 | 27.8 cm | 430 g |
| Week 23 | 28.9 cm | 501 g |
| Week 24 | 30 cm | 600 g |
| Week 25 | 31.9 cm | 660 g |
| Week 26 | 33.8 cm | 760 g |
| Week 27 | 35.6 cm | 875 g |
| Week 28 | 37.5 cm | 1005 g |
| Week 29 | 38.8 cm | 1153 g |
| Week 30 | 40 cm | 1319 g |
| Week 31 | 41.3 cm | 1502 g |
| Week 32 | 42.5 cm | 1702 g |
| Week 33 | 43.6 cm | 1918 g |
| Week 34 | 44.8 cm | 2146 g |
| Week 35 | 45.9 cm | 2383 g |
| Week 36 | 47 cm | 2622 g |
| Week 37 | 48 cm | 2859 g |
| Week 38 | 49 cm | 3083 g |
| Week 39 | 50 cm | 3288 g |
| Week 40 | 51 cm | 3462 g |
Frequently asked questions
What is the GBS test?
A swab from the vagina and rectum is tested for group B streptococcus bacteria. If positive, antibiotics are given during labour to protect your baby from infection.
Do baby movements decrease?
The type of movement changes, but the number should not decrease. Any clear drop from your baby’s usual pattern should be checked straight away.
Your pregnancy care at SoftCare Clinic
Book an appointment with our specialist doctors for your ultrasound check-up and any questions you may have.
The information on this page is for general guidance only and does not replace a medical examination. Measurements are average values; please discuss your own results with your doctor.
Medical content editor: Op. Dr. Şükrü Sanus