My dd was sick 2 times now, both at night, after eating yogurt for breakfast. My concern is that she has never done this in the past after yougurt and on both occasions, it smelled terribly like yeast. Also, last night, she did not get sick, but had the same smell in her breath while she slept and she did not have yogurt for over a week. Could this be a major problem and could the yogurt be a coincidence? I just really want to make sure this is not a huge deal. Thanks!