“Birth is a normal, physiological process. An advantage to a vaginal delivery is that the recovery and the hospital stay after a vaginal birth is typically shorter than after a C-section. For a vaginal birth, the hospital stay is typically 24 to 48 hours. For a C-section, the stay can be up to four days”
It sounds most like a generalized anxiety disorder but there could also be some OCD in there.
Dissociative drugs would interfere one's sight, sound and would create feeling of detachment from the environment and from one's self. There are two drugs namely PCP and ketamine and used as general anesthetics during surgery. Dextromethorphan can also produce effects similar to ketamine and PCP thus answer is B. Mescaline.