I'm sorry to hear that, Chameleon. If it helps at all, I've had Ts tell me that I would probably have memories come back to me if I did certain things, and that was actually often not the case.
I didn't have exactly the same thing happen, but I think it was pretty similar to what you're describing. After the trauma, I convinced myself that I'd just had a bad dream. I told myself that for a couple of years. I still had the memory, but it didn't really make sense to me so I mostly ignored it. However, when I was in seventh grade we had to one of those suicide awareness/teen pregnancy/etc. assemblies and they actually acted out a scene of what had happened to me (the beginning of it anyway). It was pretty graphic. All of the sudden I had all these memories come rushing back. I had to quickly leave and go in the bathroom. It was pretty bad for me, but I was twelve so maybe it's not as bad if you're older. I know that's not exactly the same thing, since I did kind of remember it already I just didn't know what it was.
However, even though some of the memories came back quite abruptly, I still don't remember the whole thing. Maybe it will be like that for you, where the memories come back to you in smaller, more manageable pieces. I've even been told (although I'm not sure this is true) that I won't necessarily ever have to remember the whole thing. And honestly, I didn't really have too much trouble with flashbacks or anything until recently when I started having nightmares about the event. I know it's really unnerving having people tell you that or feeling like you're going to have that stuff come back to you, but you'll be okay. Hang in there!