My 12 month old has been on homogenized milk for about 2 weeks now. She s seemed constipated, so we cut down the amount she s drinking. Last week, she started getting a rash , which became a very bad yeast infection and now her stool is pale yellow and kind of foamy/curdled. She s very crabby, and is not normally, and is not really eating much and is waking up, often, throughout the night. Might she have a lactose intolerance , or could it be something more sever?