The ball of cells ¡X now called an embryo ¡X growing inside your uterus is the size of an apple seed. It's divided into three layers that will later form organs and tissues. Low on the sides of the head are two folds of tissue that will become the ears.
The neural tube ¡X from which the brain, spinal cord and nerves, and backbone will sprout ¡X develops in the top layer. The heart and the circulatory system begin to appear in the middle layer. The third layer starts to house the lungs, intestines, and beginnings of the urinary system. In the meantime, the early version of the placenta, the chorionic villi, and the umbilical cord, which delivers nourishment and oxygen to the baby, are already on the job.
If you haven't already tried a home pregnancy test, taking one now will confirm your pregnancy. Once you get confirmation, you should call your healthcare provider and make an appointment. Good and consistent prenatal care is one of the best ways to ensure that you and the baby will be healthy throughout pregnancy.