When your baby gets sick, there is always some part of you that wonders if perhaps it isn't all the other children in daycare, but just maybe, maybe, it's your fault. You ask, "has she not enough nutrition lately? I have been rather busy...". "Has she not been sleeping as well? I have been staying up a bit late these days. Am I keeping her up?". Somehow, the little voice in your head says it's you who have been doing too much or not enough to pay more or better attention to the baby. You promise you'll be better, do more, do less. Whatever it takes if just she would come back to her peppy little self. And she has and I get to breathe a little sigh of relief.