In the very first week of the second month which is the fifth week of pregnancy period, the embryo is still not grown much. In this week, baby will measure 0.05 inches and the development of the brain, heart and spinal cord will begin in this week of pregnancy. The formation of placenta as well as the amniotic sac also occurs in the fifth week of 2 months pregnant woman. The placenta works to provide proper nourishment to the baby while the amniotic sac provides an environment which is safe as well as warm in order to make the movement of the baby easier.
The pregnancy week by week report for the second month states that the embryo will start to look like a tadpole which will measure from 0.08 to 0.16 inches. This measurement is done from the top of the head portion to the lower portion of the buttocks. The measurement from head to legs is not done because the legs are bent which results in hardness of the measurement work for the doctors. This week is the most important week in the development of baby because the chances of facing some problem in the natural growth of the embryo are maximum.
