Incredible that there is even a 0.9% chance that the fetus can survive the term. Never lose hopeβ‘
Ectopic pregnancies often occur in the Fallopian tubes because instead of the fertilized egg travelling down into the uterus to implant itself, it implants where it is. In this case, the zygote most likely travelled back up the fallopian tube and put into the abdomen where it implanted itself there.