Your baby will reach between 7-9 mm by the end of this week. As the arms and legs continue to develop, tiny hands are starting to form, though they are not fully defined yet. Your baby's more prominent facial features, such as the eyes, nostrils, mouth and ears are becoming more defined. internally, the digestive tract and lungs are continuing to develop.
The umbilical cord will be completely formed by the end of this week. This connection between mother and child will be vital for providing oxygen and nutrition to your baby while also disposing of waste.