A four-hour emergency room wait is grueling under any circumstances — but for one Illinois woman suffering from a severe migraine, it became even more troubling when she was later billed despite never seeing a doctor. Autumn Daniels spent those hours repeatedly vomiting in a hospital waiting room, only to later receive a $410 charge, KFF Health News reported. Here's what to know At Carle Foundation Hospital in Urbana, Daniels' emergency visit am…