Speaking for myself, I would take every step possible to prevent fertilization/implantation. I would never willingly give birth to a rapists child. If I bear a child, it will be not only mine, bu my *husbands* and noone else's.
I would never give a genetic edge to the strategy of rape.
Best answer I've seen yet on the question of an abortion for the raped and pregnant 9 year old
Also a great answer on the rape kits some of you abhor.