The problem can occur anytime between the 20th week of pregnancy and the beginning of delivery. All or only part of the placenta may break away from the uterus. Placental abruption can be dangerous for both you and the baby. You could lose a lot of blood, and the baby could die from lack of food and oxygen. A trauma such as a car accident or a fall may trigger the problem.
Cocaine abuse increases the risk.
You could have uterine contractions, with your abdomen tightening and relaxing as it does when you are in labor, or remaining tight all the time. You may need a test called an ultrasound. This painless procedure uses sound waves to build an image of the baby on a TV-like screen. Medicine to stop contractions may be necessary if you are not ready to deliver. If the abruption is small, bed rest may be all that's needed.