Go to a family Doctor. Use the word, Insomnia. Insomnia is a medical term, whereas "can't sleep" is just a complaint. For insomnia you can get a prescription. I'm on Ambien, but there are other meds for it. And, yes, going to the emergency room is a choice if you don't have any money. I don't understand why authorities are worried about people going around medicated, when a person who hasn't slept for days is a risk on the job or on the road.