Second trimester · 21 weeks to go
| Fact | Week 19 |
|---|---|
| Days of pregnancy | 127–133 since LMP |
| Gestational age span | 18w0d to 18w6d |
| Trimester | Second trimester (weeks 14–27) |
| Pregnancy month | Month 2 (weeks 5–8) |
| Average length | 6.0 in (crown to rump) |
| Average weight | 8.5 oz |
| Size comparison | an heirloom tomato |
| Weeks remaining | 21 (40-week due date) |
Week 19 brings vernix: a creamy, waxy coating starts covering the baby's skin to protect it from weeks of amniotic fluid immersion. The brain is carving out dedicated zones for the five senses.
The kidneys keep making urine, the scalp is sprouting hair, and the limbs have reached proportions they'll keep. First-time parents usually feel movement between now and week 22, second-timers earlier.
Gestationally, week 19 means you are 18 weeks and 0 to 6 days pregnant, day 127 to day 133 counted from the first day of your last period. This is week 6 of the second trimester (weeks 14–27). Prenatal appointments run about every four weeks in this stretch. Week 20 brings the anatomy scan window (weeks 18–22). Across this trimester the baby more than triples in weight, so expect your bump, your appetite, and eventually your waddle to keep pace with the calendar. Every number on this page is an average across pregnancies; your own scan dates and your baby's measurements are what actually describe your week 19.
Side-sleeping with a pregnancy pillow is the fix for hip pain. Track movement patterns once kicks become regular.
Weeks of pregnancy don't map cleanly to calendar months, but the common division puts week 19 falls in month 2 of pregnancy (weeks 5–8). Week 19 is part of the second trimester, which runs from week 14 to week 27. Gestationally, week 19 means you are 18 weeks and 0 to 6 days pregnant.
At week 19 the baby averages 6.0 in long and weighs about 8.5 oz, roughly the size of an heirloom tomato. Sizes come from fetal growth charts (crown-rump length before week 20), and normal variation week to week is wide; your ultrasound measurements always outrank a chart.