Hi, we are blessed with a baby girl last month. I see that there is a birth mark on her face which seems to be spreading. it's a coffe colour mark. since the mark is on her face I am really worried about it. will the mark fade off by itself or will it spread all over the cheek over a period of time? should we approach a children's dermatologist at this very early stage? baby is just a month old. please suggest how to go about it?