Second trimester · 15 weeks to go
| Fact | Week 25 |
|---|---|
| Days of pregnancy | 169–175 since LMP |
| Gestational age span | 24w0d to 24w6d |
| Trimester | Second trimester (weeks 14–27) |
| Pregnancy month | Month 2 (weeks 5–8) |
| Average length | 13.6 in (crown to heel) |
| Average weight | 1.46 lb |
| Size comparison | a rutabaga |
| Weeks remaining | 15 (40-week due date) |
Week 25 brings recognizable hair, with color and texture now set. Fat continues packing on, and the baby's proportions are starting to look newborn-like under the still-wrinkled skin.
Capillaries form in the lungs to prep for oxygen exchange, and the nostrils, plugged until now, open. The nerves around the mouth and lips grow sensitive enough for rooting reflex practice.
Gestationally, week 25 means you are 24 weeks and 0 to 6 days pregnant, day 169 to day 175 counted from the first day of your last period. This is week 12 of the second trimester (weeks 14–27). Prenatal appointments run about every four weeks in this stretch. Week 28 brings the third trimester and the start of daily kick counts. 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 25.
Heartburn: smaller dinners and no lying down right after. For hemorrhoids, water, fiber, and a donut cushion.
Weeks of pregnancy don't map cleanly to calendar months, but the common division puts week 25 falls in month 2 of pregnancy (weeks 5–8). Week 25 is part of the second trimester, which runs from week 14 to week 27. Gestationally, week 25 means you are 24 weeks and 0 to 6 days pregnant.
At week 25 the baby averages 13.6 in long and weighs about 1.46 lb, roughly the size of a rutabaga. Sizes come from fetal growth charts (crown-to-heel length from week 20), and normal variation week to week is wide; your ultrasound measurements always outrank a chart.