Nicks and scratches can cause scarring which may lead to endometriosis. If those scars are near the opening to a fallopian tube, the opening can be partly covered. Tiny sperm can swim in and fertilize the egg, but the fertilized egg, hundreds of times larger, cannot pass back through into the uterus. The fertilized egg can implant and grow in the tube until the child's size reaches the tube's limit. If the condition is not diagnosed, the tube explodes, the child dies, and the mother may die also.
Some studies show a five-fold increase in an aborted woman's risk of tubal pregnancy.
Alternatively, the scarring may cover the tubes' entrances completely. In this case, the sperm can never meet the egg and the woman is sterile. She thought she was aborting one pregnancy, but she was aborting all her pregnancies for the rest of her life. But it is in fact her own child, as much like her as any child she will ever have, sharing her appearance, talents, and family tree. In abortion, she offers her own child as a sacrifice for the right to continue her own life as it is, and it is a sacrifice that will haunt her.