Shocked out of sleep, Harry stopped snoring and quietly said "What? What? I'll get him," and made to move out of the bed. In his sleep induced state, Harry forgot where he was, and thought Ginny had woken him up to get one of the boys who was crying.
Still breathing really deeply with his eyes closed, Harry sat up and made to move off the bed. Only when he realized that his side was blocked by a wall, did he open his eyes to see what was wrong.
He looked around at the other two beds in the room, and only then did it dawn on him where he was. "Gin?" he asked softly, "What's wrong?"