Baby acne? Or something else?

My baby is 5 weeks old and fresh out of the NICU (we were there for over two weeks after birth due to her being induced and her lungs not being fully developed). I do breastfeed exclusively and I have not changed any soaps or anything that I know of. But she has this horrible rash and what looks like acne. Most of the "zits" are on her head, ears, neck, chest, and face but there are a couple bumps near her lady business. I'm just not completely sure if it is baby acne or not. I go to the WIC office tomorrow and the pediatricians on Monday so I'm not super stressed. Just wondering if anyone has any advice or thoughts.