"your pain is only in your mind" doc told me

I posted here some time ago about pain during sex.
I went to two doctors and they both told me that physically everything is okay, last doc told me to see therapist because these pain during sex is in my mind, it's psychological, he doesn't find anything that can cause me pain except my own mind.
I took painkillers in higher doses but I still felt the pain. When I take painkillers it hurts less but still it's horrible for me to have sex. I'm wondering how can it be- even opiates don't take away these pain and physically everything is perfect.
I think it's crazy. It makes me think- I need stronger pain killers but then I am almost in coma while making love, it usually happens when I'm on painkillers and alcohol so I'm relaxed and still feel pain.
I tried to do it sober but pain was unbearable. It's not only pain i feel, I feel pain almost everyday, my chronic headaches, my migraine.

I think I'm hopeless. I feel raped every time I have sex. I know it's because of trauma but even talking about in therapy doesn't help me.
I think there is nothing I can do.
My boyfriend knows about my pain and he understands me and doesn't press me to do it if it hurts but I want it, I want it but can't.