The beginning of the second trimester brings with rapid growth.
This continues for the entire fetus except for the fetal head.
The face becomes more defined with the eyes now lie directly on the front of the face, the ears have moved to their final location on the side of the head.
The bones are formed completely and the skeleton can be seen well for the first time on x-ray.
The fetus may start sucking its thumb and fetal movements will become coordinated.
By the end of this four weeks, the fetus will measure approximately 9-14 cm (4-6 inches) and will weigh about 200 grams (just less than 1/2 pound) or the weight of a small potato.
Do you have any questions about your pregancy? Is so, please feel free to contact us.