Muru, you are amazingly brave, I am really glad you managed to talk to your GP!
Anything he told you so many ears ago - it wasn´t true... He lied to you to make sure you won´t tell anyone, as he tried to protect himself from being punished for his own bad deeds...Nothing of that was your fault. No one will cause you any harm. It´s gone. You are safe now and you are seeking for help, which is very good. Please, don´t be afraid, his words have no power over you...
I understand it must be difficult to speak, it was horribly difficult for me as well... Just try to keep in mind that the therapy will help you. You are doing this for yourself, you deserve help and this is the way to get it, although it´s not an easy way... I believe you will find courage, maybe you could write your story down and let the assessor just read it? Anyway, you are very strong person. And very good person as well, remember that ;-).
As Splinter wrote, medication is up to you, it´s not neccessary, what is crucial is the therapy. But even if you needed some medication temporarily to bring you some relief, it wouldn´t mean you are weak or getting crazy or something like that. There would be no need to be ashamed.
My dear Muru, about your last concern... yes, I am afraid that is true. Try to imagine this situation:
You were hurt really badly by somebody, very long time ago. Nobody saw you injuries and you had to live with them, with these bleeding wounds inside your soul and body. You were doing your best to survive and the only possible way was to cover these wounds by loads of gaze and bandage... It wasn´t bad, it wasn´t your fault, it was simply the only way a child could cope with these experiences. But these injuries of yours are still bleeding, still festering, still torturing your mind and heart. If they are to be healed (and I do believe they would be), you need to uncover them. Which hurts, of course... You realize all the pain and it will seem overwhelming. But then you can stop the bleeding and clean the pus. Healing is possible, but it´s not easy.
I know this is not an easy way, but you have already started, you don´t want to live the way you used to live, trapped in lies and self-blame - you have already uncovered some of these unspoken nightmares and fears... You are at the beginning right now. The following months won´t be easy. Sometimes you would feel scared to death. Sometimes you will feel desperately alone. But you are not. Try to remember your friends, your most beloved ones, seek their support. You deserve all the love and care, don´t be ashamed to ask for it. The darkness doesn´t last forever as dawn comes after night and spring comes after winter, there is recovering after being ill - there is always hope. Only it´s not solved in a few days or weeks and not even months... You will probably cry and blame yourself and you will shiver with fear, but that´s not the end. There will be ups and downs, at first more downs, but in time the ups will become longer and more persistent.
Nothing of that was ever your fault. You are strong and brave and - which is most important - you are a good person. You deserve help. You deserve love. And you deserve to feel better and I believe with all my heart you will feel better and you will be healed.
<3 bluebird