My 4 month old son has drainage from his belly button. It is whitish, yellowish in color and kind of mucousy. His belly button is red around the edges. At his 2 mo well check up, his pedi used silver nitrate on it, but that didnt really do anything to help. He goes to the dr next week for his 4 mo appt but I wondered if I should take him sooner. His undershirt is constantly stained from the drainage. It doesnt seem to be sensitive when I clean or touch it, but he has been uncharacteristically fussy lately. Thanks for your help.