This is one of the most controversial issues in current bioethics, since it is used as a weapon among the defenders and detractors of abortion, and it is a matter of debate in fetal surgery about the use or not of analgesics.
The latest research suggests that fetuses lack neural circuitry to feel pain until at least 29 weeks ' gestation.
Although your thalamus – a brain sensory center – receives pain signals, they are not interpreted as such. And a New Zealand study published a few months ago indicates that the pregnant woman remains in a state of unconsciousness throughout the pregnancy, something like in a deep sleep in which she cannot feel pain.
