Baby acne and yellow crust around nose?

Kie

Is this a really bad case? The baby acne is going into his hair and on his ears and on the back of his neck..:: And I keep wiping his nose but he keeps getting yellow crust around it. I do breast milk and formula. Anyone have a clue what it could be or what to do? I go to the pediatrician on the 19th. Ignore the booger in the last pic, I got it out after i took the pic...