Originally a comment by Seanna Watson on Nope.
“Ectopic” technically just means “out of place” – in the case of a pregnancy that means it’s not in the uterus. The most common misplaced location is in the Fallopian tube, since that’s where eggs tend to be. (If untreated, tubal pregnancies are usually fatal to the mother.) But there is also the remote possibility of the egg being fertilized while floating free in the abdomen, and implanting in some random location. Bodies are indeed weird, and the development of the parasitic organism (aka embryo) apparently does not actually require the uterus – it can make its own placenta attached anywhere as long as it can find sufficient connection to do … Read the rest