I've delivered lots of babies, and I know about these things. It is true. We tell infertile couples all the time that are having trouble conceiving because of the woman not ovulating, 'Just relax. Drink a glass of wine. And don't be so tense and uptight because all that adrenaline can cause you not to ovulate.' So he was partially right wasn't he? But the fact that a woman may have already ovulated 12 hours before she is raped, you're not going to prevent a pregnancy there by a woman's body shutting anything down because the horse has already left the barn, so to speak.