Age Of Fetus 7 weeks.
How Big Is Your Baby?
The crown-to-rump length of the embryo is 0.9 inch to 1.2 inches (22 to 30mm). This is close to the size of a medium green olive.
How Big Are You?
Each week your uterus grows larger with the baby growing inside it. You may begin to see your waistline growing thicker by this time. A pelvic exam will detect a uterus a little bigger than a grapefruit.
How Your Baby Is Growing and Developing
If you could look inside your uterus, you'd see many changes in your baby. The illustration shows some of them.
Your baby's arms and legs are longer. Hands are flexed at the wrist and meet over the heart area. They continue to extend in front of the body. Fingers are longer, and the tips are slightly enlarged where touch pads are developing. The feet are approaching the midline of the body and may be long enough to meet in front of the torso. The head is more erect, and the neck is more developed. The eyelids almost cover the eyes. Up to this time, the eyes have been uncovered. External ears are evident and well formed. Your baby now moves its body and limbs. This movement may be seen during an ultrasound exam.
The baby looks more recognizable as a human being, although it is still extremely small. It is probably impossible to distinguish a male from a female. External organs (external genitalia) of the male and female appear very similar and will not be distinguishable for another few weeks.

