stress hormones miscarriage cortisol
A pregnant woman under stress, and having a baby from an act of rape has to be (I'm not a woman so that's opinion) stressful on a woman, produces higher levels of cortisol which increases the risk of miscarriage.
Simply looking into this a little bit would reduce a lot of this mistaken commentary.
2 years from now there could well be an article that says Todd Akin was right. Then the vindication will come and the right to life argument furthered. That is then and this is now. 80 days until a major election is not enough time to control the discussion.