Do Fetuses Feel Pain? - Reason.com

http://reason.com/archives/2013/07/12/do-fetuses-feel-pain

In reviewing the neuroanatomical and physiological evidence in the
fetus, it was apparent that connections from the periphery to the
cortex are not intact before 24 weeks of gestation and, as most
neuroscientists believe that the cortex is necessary for pain
perception,
---Steve