Normally the placenta is formed at the upper part of the uterus, sometimes the placenta is formed at the lower part of the uterus and part of it or all of it is covering the cervix. This is a dangerous situation as it might lead cause the placenta to bleed from cervix. It can be diagnosed by ultrasound scan. The pregnant woman is advised to rest more and have no sex. There is no medication to treat placenta praevia. If bleeding occurs and the baby’s gestational age is suitable for delivery, the mother can be delivered by a Cesarean section.