Doesn't fill anything on dissociation. OCD - maybe. However, it doesn't sound like a serious problem, unless there is a lot more to it. But a simple situation like that is not a big deal. It might seem wierd of course, the more you think about it. But if it ends there, there's no need to fuss about it. Like said before, OCD has nothing to do with problems processing anything, I'd even rather say, one tries to overprocess something for so long it becomes impossible.