There is a chance that a placenta previa will correct itself after 28 weeks.

If the placenta has started to detach from the wall of the uterus, and your baby's health, then treatment for it is determined by the length of your pregnancy.

The placenta has been working hard throughout your pregnancy to carry your blood and oxygen to your baby.If this organ is attached high on the wall of your uterus, it can cause problems if it grows over the cervix, a condition called placenta previa.

The baby arrives before the birth and travels through the vagina and cervix.Within half an hour of your baby being born, you will be able to give birth.Your baby needs this sequence of events to be able to breathe on his own.

The opening in the cervix that leads to your vagina may be partially or completely blocked if the uterus grows low.Heavy bleeding during labor and delivery can be dangerous for the mother and baby.

It happens in about 1 in 200 pregnancies.Women who smoke, use cocaine, or are over the age of 35 are more likely to have placenta previa.

If a woman has had previous uterus surgery, such as a c-section, a D&C, or an abortion, they are more likely to get pregnant again.

Previa can increase the risk of life-threatening hemorrhage, either before or during labor.As your cervix thins out and opens in preparation for delivery, the uterus can become damaged due to its lowered position, which can lead to uncontrollable bleeding.You might start bleeding if this happens.

The cause of the bleeding will be determined by your provider.A low-lying placenta or a previa can be seen on an ultrasound at 18 weeks.When the uterus has grown larger, most low-lying placentas will no longer be low.Most of the time the cervix stays there if the placenta is completely covering it during the 3rd trimester.During the last 2 months of a pregnant woman's life, a placenta previa is usually diagnosed.

More than 90 percent of the time, the previa is correct by term.You do not need to restrict your activities or undergo treatment.At about 28 weeks, your doctor will probably recommend a secondechocardiography to make sure the uterus has moved away from the cervix.

If there is no bleeding during the third trimester, your provider will probably tell you to go on bed rest or limit your activities until your baby is big enough to be delivered by cesarean.Cesarean deliveries are usually necessary because a vaginal delivery can cause life-threatening bleeding and lack of oxygen for the baby.