Since i don't know what was asked, it's hard to comment, however, i think you need to find out who to talk to Hospital Administrator, whose job it is to deal with complaints against medical staff - at the hospital where this occurred absolutely. Personally, I think you have been abused for sure. There was absolutely NO NEED to drug you and then ask you ANY questions, let alone those of a sexual nature. I'm really sorry that you're not finding any relief for how you're feeling with the therapist that you've seen. I think you should sit down and write up a document explaining your complaint, and ;p see if there is anywhere on the hospital's website you can post it, For instance, here there is a site where doctor's are rated. Bring the document with you and ask to talk to the Hospital Administrator. Tell them that you are experiencing symptoms of PTSD; and you have not found a therapist to help you with that, and tell them that you want them to refer you to a therapist. I'm really, really sorry that you are so upset by this. I would be too, no doubt about it.
If you can talk to a lawyer, and ask about suing them for drugging you and then asking sexually charged questions, i might also check into that, and have your lawyer send the hospital's lawyer a letter. Settlements have been made for less just to have this go away, or not to have you post the incident on the internet. THERE IS NO WAY THAT DRUGGING A PERSON AND THEN ASKING THEM ANY QUESTIONS ABOUT A PERSON'S SEX LIFE, ESPECIALLY IN FRONT OF OTHER PEOPLE.
You are RIGHT to be upset. I'm sorry. I'm sending you a hug as we speak. Feel better. I'm here if you want to talk privately. :).
My guess is, you misremember what happened due to your being heavily drugged with fentanyl. That's more believable than a whole room of medical professionals listening while you are asked very very inappropriate sexual questions. Maybe you could go on from there, rather than pursuing lots of therapy?
Asking about sexual history is a part of a history taking by physicians and I highly doubt that they meant to be rude or abuse you especially with so many people around.