Ds had his mmr 2 weeks ago and since Friday he's been miserable. He has very high temps (went up to 40 at one point) off his food, quiet and cuddly and in tears most of the time. He's also teething and had his boosters at the sane time so I'm guessing he just feels rubbish. Anyone else's lo feel like this after? How long can I expect it to last? I want my happy baby back!