A fertilized egg goes through several stages of development but initially is called a zygote. The next stages of development are blastocyst, embryo and fetus.
It takes between three and five days for the zygote to traverse the fallopian tubes into the uterus, where it develops into a blastocyst. The blastocyst, little more than a congregation of cells, implants in the uterine wall, where the amniotic sac grows. The embryo stage follows where the body takes form and internal organs begin to develop. Eight weeks after fertilization, the embryo is developed enough to be considered a fetus. During this final stage, the bodily components that formed as an embryo continue to mature until delivery.Learn More
A pregnant woman does not need to call her doctor when she loses her mucous plug after reaching full term, states the Diamond Women's Center. An early loss of a mucous plug may signal complications, however, so a woman who loses her plug at 36 weeks or earlier should call.Full Answer >
A doctor who specializes in the care of women during pregnancy, childbirth and recovery from delivery is an obstetrician, according to the March of Dimes website. Eighty percent of pregnant women choose obstetricians as their physicians of choice during pregnancy.Full Answer >
Implantation occurs around six to 12 days after conception and, along with light bleeding, may cause cramps that last for one or two days, states WebMD. Implantation cramps are just one of the many types of cramping and pain that may occur throughout pregnancy.Full Answer >
According to WebMD, one of the early signs of pregnancy can in fact be discomfort of the stomach area. In some cases, a newly pregnant woman may also experience cramping similar to the cramps associated with her menstrual cycle, and she may also experience some light spotting.Full Answer >