Example ancient Greek and Rome.
I'm wondering how sex slaves coped, if they had lots of PTSD and what motivated them staying alive. I'm curious on how they managed and was motivated for another day.
What about unwanted pregnancies, STDs etc.? Did it affect them?
I can't comment on the PTSD or personal coping strategies part of your question, but when it comes to unwanted pregnancies, I did talk about pregnancy among Irish women slaves in this post a little bit (about as much as one can from the limited sources).