Fetal development
Brain growth accelerates, and tiny arm and leg buds become more defined.
First trimester
A practical week 6 guide covering fetal development, symptoms, nutrition, prenatal tests, baby size comparison, and warning signs to discuss with your care team.
Brain growth accelerates, and tiny arm and leg buds become more defined.
Around week 6, baby is roughly comparable to a green olive. Estimated size: about 0.9 inches and 0.07 ounces, with natural variation.
This week-by-week pregnancy content is educational and does not replace care from a qualified healthcare professional.