In general, anterior placentas do not cause any complications for the baby, parent, or delivery. In fact, the placenta may change locations (migrate) as a pregnancy progresses.
How the placenta develops
The placenta is a unique organ, but in contrast to other organs like the kidneys and liver, it's only present during pregnancy. The placenta and fetus begin developing at the same time — the moment of fertilization. Cells that will become the placenta appear on the fifth day after conception. Cells that will become the embryo will attach to the wall of the uterus by the sixth day, and the placenta will continue to develop until the 13th week, at which point it’s fully formed and begins to function as an organ.
The function of the placenta is multifaceted. It provides nutrition and oxygen for the embryo, removes waste products, and serves as reliable protection against outside factors.
How common is anterior placenta?
Anterior placenta is very common during pregnancy. Various studies show that the placenta will be in front of the fetus at some point in between one-third and one-half of all pregnancies.