my DS is the same as CF's - and has only ever gone off his food if sick. even if he's teething & doesn't want solids, he still usually wants his BFs. if your gut is telling you something is wrong, then it'd be worth getting her checked out, even if it is just for your peace of mind. is she still drinking water?

i'm not sure whether it's normal to go so long without eating - i only have my DS to compare it to & he's not a huge eater but does snack/have small meals regularly.