What did I do?!?

I seem to have eaten something that does not agree with Aaron. His newborn acne had finally cleared and I was admiring his nice moist soft skin only to wake yesterday and find him completely broken out. I have no clue what I could have eaten to cause that so now this pretty complexion is back to how it was except it's not just his face this time but his whole body! Joy. I did have a slice of provolone on a sub, I wonder if that did it? If so, that really makes me worried. His milk sensitivity would be much worse than Nicky's. When Nick was small I would just avoid milk and ice cream but I ate cheese is small amounts. It would cause him to cry but it didn't physically affect him the way it has with Aaron. I guess I will have to cut ALL dairy. His poop is also green again which is another sign of a food sensitivity. I think I'll keep a food diary and cut the dairy. Hopefully we'll see some improvement. My poor guy, I feel awful :(