Share 'brain chemistry changes during birth/under meds'

i am curious about the changes in the brain chemistry if the woman is given meds, anesthesia, etc? I have heard that when a woman delivers naturally the "love chemicals" let down in her breast milk and release in her brain to bond her to her child and the child receives thru her breast milk. I heard that when a woman is given meds, what is released is adrenaline and cortisol in her brain and in h…