Girls, hello everyone! This is my first post, I guess ? Help me out, …

Girls, hello everyone! This is my first post, I guess ? Help me out, little one is 18 days old and three days ago there were such rashes on his cheek, it's newborn acne, or did I eat something? I don't really follow a diet, I eat sweet and starchy things in small amounts, but not spicy, fatty, salty ones. The body is clean, only a bit of redness appeared on the cheeks. If it's acne, can they increase in number and get bigger?