Every month released an egg from a woman’s ovaries. Small Cilia at the end of the fallopian tube, tuba uterina, picks up the egg, and leads it into the fallopian tube. It is here, inside the fallopian tube that fertilization usually happens.
Sperm swims up into the uterus from the vagina and further out in the fallopian tube, where a sperm penetrates the egg. The fertilized egg moves now down through the fallopian tube toward the uterus where it implants (implanted) and develops until birth.
In some cases the implanted the fertilized eggs in other places than in the uterine cavity. This is a well-known phenomenon, and are referred to as ectopic pregnancy or an ectopic pregnancy. It is most often in one of the fallopian tubes, it happens, but it can also happen in other places, in the abdominal cavity or in the cervix.
An ectopic pregnancy described on http://www.bridgat.com/shop/dresses-for-pregnant-women/ may sooner or later lead to life-threatening bleeding into the abdominal cavity, where the fallopian tube cracks. Therefore perceived an ectopic pregnancy as an acute condition that requires immediate treatment.