Sherlock woke up with what he could only explain as the worst hangover he had ever experienced. More accurately, the only hangover he had ever experienced. He only knew what it might be like from research and what he had overheard during his time spent in university. Whatever that woman had injected into him the night before, it was really taking its toll now. He rolled over to see Molly sleeping peacefully beside him, knowing that he must have worried her to death coming home in the state he was in. He didn't really remember anything after he had been injected, save telling John a few key things that he didn't want to be forgotten.