19 weeks pregnant
Your baby is about 15 cm and 240 grams; the senses are developing rapidly.
At week 19, your baby’s skin becomes covered with a protective white coating (vernix), and the senses develop rapidly.
This week’s ultrasound image
Expected ultrasound appearance and measurements at week 19 (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)
Crown–rump length
152 mm
Head diameter
45 mm
Head circumference
165 mm
Femur length
30 mm
Estimated weight
240 g
Heart rate
146 bpm
How big is your baby this week?
About the size of a mango
What can be seen on the ultrasound?
BPD is about 45 mm, HC about 165 mm, AC about 144 mm and FL about 30 mm. The heart rate is about 145–150 beats per minute. The anomaly scan can also be done this week.
Your baby’s development
Your baby is about the size of a mango. The areas of the brain for taste, smell, hearing and touch are developing. Sleep and wake cycles become more defined.
Changes in your body
Your bump grows quickly; you may be prone to stretch marks, groin pain and leg cramps.
Check-ups at this stage
- Anomaly scan (if not yet done)
- Routine check: blood pressure, weight, urine
- Planning the glucose tolerance test for weeks 24–28
Tips for this week
- Use a moisturiser on your tummy, hips and breasts
- Eat a diet rich in calcium and magnesium
- A pregnancy pillow can make sleep more comfortable
When should you see your doctor?
Contact your doctor if you have bleeding, regular contractions, fluid leaking from the vagina, or notice a clear reduction in your baby’s movements.
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 vernix?
It is a white, greasy coating that protects your baby’s skin from the amniotic fluid. Most of it disappears by the time of birth.
When is the glucose tolerance test done?
It is usually done between weeks 24 and 28 to check for gestational diabetes; if you have risk factors, your doctor may recommend it earlier.
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