The embryo is now about 12 inches long, and the mother feels fetal movement on a regular basis.  Eyelids and eyebrows are fully formed.  Fingernails have grown to the end of the fingers.

If a sound outside is especially loud or startling, the fetus may react with a sudden movement. If you talk, read, or sing, expect her to hear you.

For more fetal development pictures, see:

• Fetal development at 8 weeks
• Fetal development at 12 weeks
• Fetal development at 16 weeks

Picture copyright (c) Zrodlo Foundation, Krakow, Poland