During ovulation, a female egg cell leaves its protected place in the ovary and wanders through the fallopian tube. If she encounters sperm during her journey, a merger can take place. The fertilized egg usually continues to migrate for a few more days and then settles in the designated place, the uterus. In 1-2 out of 100 pregnancies, the fertilized egg does not settle in the uterus, but in another place. In technical terms, this is referred to as extrauterine pregnancy (EUG) or ectopic (e) pregnancy.
Which forms are there?
Depending on the place of implantation, the fear survives only a short time or a little longer - but almost always the embryo dies, because it not only has too little space, but also can not be sufficiently supplied with nutrients outside the well-equipped uterus.
- Ectopic pregnancy (tubal pregnancy): This is by far the most common form (99% of cases). After fertilization, the egg divides several times, thus growing into a spherical collection of cells (morula). If, for example, the fallopian tube is altered - possibly as a result of previous inflammation - the fruit can only move slowly and reach its implantation stage before it reaches the uterus.
- Ovarian pregnancy: Ovulation in or on the ovary is very rare - it is estimated to occur in 1 in 40, 000 pregnancies. It usually manifests itself as a severe abdominal pain (about 2 weeks after the menstrual period stops), but - extremely rarely - can sometimes be like a normal pregnancy (as the recently born "miracle baby" in Australia shows).
- Abdominal pregnancy (abdominal pregnancy): Since the ovary and fallopian tubes are not firmly connected, the fertilized egg can also enter the abdominal cavity and settle on the peritoneum. Since there is initially room to grow, such a pregnancy often goes unnoticed for a few weeks or atypical symptoms occur.
- Cervical pregnancy (cervical pregnancy): Here, the egg nestles not in the intended place, but in the narrow neck of the uterus. Also this "deep implantation" is very rare.