given not all the signs fit - the dry cheeks isn't just due to change in weather by any chance. I remember the first winter my DS cheeks dried right out and cracked with the first sign of windy weather and so did my neighbours little girl. Bath's always made it worse cause the baths naturally dry your skin so already dry skin gets worse so I used to pile on the sorbelene to minimise it.

Given you talk about pimples and the effects of breastmilk its probably not it but thought I'd mention it just in case.