A woman experiencing chronic, high levels of stress can certainly have problems with conceiving or successfully completing a pregnancy, but that’s not the same thing as the stress caused by a singular violent incident.
This is really a tangent side issue being used by PhxTM06.
Cortisol and Stress: How to Stay Healthy By Elizabeth Scott, M.S.
Although stress isn’t the only reason that cortisol is secreted into the bloodstream, it has been termed “the stress hormone” because it’s also secreted in higher levels during the body’s ‘fight or flight’ response to stress, and is responsible for several stress-related changes in the body.
Stress: Constant stress puts your health at risk
The long-term activation of the stress-response system — and the subsequent overexposure to cortisol and other stress hormones — can disrupt almost all your body's processes.
Elevated cortisol from stress after the rape can be how a woman prevents herself from becoming pregnant.
How hard is this to grasp?!
Anxiety disorders and salivary cortisol levels in older adults: a population-based study
Conclusion
Older adults from the general population with long-lasting anxiety disorders had a lower cortisol awakening response than those without. This is consistent with the notion that chronic anxiety may result in downregulation of HPA-axis activity. Longitudinal studies are needed to confirm this mechanism.
So your 'fight or flight' mechanism is reduced when you're stressed out all of the time.
No wonder liberals want us all worried all of the time.
If we're "stressed out" all of the time we won't fight back as we naturally would.