question: Hi, may I answer your health queries right now ? Please type your query here...My baby has a lump/bump on his left butt cheek. I took him to his primary doctor and she prescribed cephalexin and adviced me to put him in a warm bath and it should go down in a couple of weeks. However, the bump/lump is getting larger and he is developing a fever. Should I go to the emergency room or wait it out?