Sounds horrific op. Sorry you were treated so appallingly by someone you trusted.
From my personal experience (and it's not professional) it sounds to me that you haven't processed it yet. I mean literally - this memory is still very alive for you, which is why you can't even type the words on an anonymous forum. That's totally normal for experiences that were too big for us to truly comprehend them in their full awfulness - ie traumatic. This is entirely normal, and when you think about it, something that makes a lot of sense.
I found EMDR therapy very helpful in this. What's attractive about it is that you don't actually need to talk about it all, just what you can do the therapist has an idea. It's not easy, I can't lie, but can be helpful.
I would agree to contact Rape Crisis Centre (RCC) too. You are far from alone in feeling this way about something someone did to you. They will be able to help and at least point you in the right direction.
Oh and you didn't consent. First you were too drunk to consent - or continue giving consent. Second consent has to be willing. If you were truly willing you wouldn't have felt the need to get drunk. Finally, who wants to have sex (and I use that term loosely here) with someone who is clearly neither enjoying it nor conscious?
You did absolutely nothing wrong. At all. He, on the other hand....