1st trimester · Week 8
8 weeks pregnant
Peak organ-building
Most major organs are sketched now, even if they cannot work independently. Fingers and toes are webbed. This remains a high-sensitivity window for harmful exposures.
How big is your baby at 8 weeks?
- Length
- 1.6 cm
- Weight
- 1 g
- Size
- Blueberry
On average about 1.6 cm long and 1 g. Size comparison: Blueberry.
These are averages; every baby grows at their own pace.
How is your baby developing at 8 weeks?
Facial features start to gather: dark eye spots, nostrils, and upper lip folds. The heart has chambers forming. The intestine may herniate temporarily into the cord — a normal stage. Length is often about 1.4–1.8 cm.
What changes in your body at 8 weeks?
Nausea may peak for some people between weeks 8 and 10. Excess saliva, heartburn, or food aversions can appear. Clothes may feel tight from bloating rather than a growing uterus.
Tips for this week
Eat what stays down, then widen variety when you can. Ginger or acupressure bands help some people; evidence is mixed. Teratogen caution is highest now — confirm any workplace chemicals, X-rays, or new prescriptions. Contact care for bleeding heavier than a spot or severe pain.
