From what I know nurses do have to clean pee, poop and vomit, if the patient is still in a room waiting to see the doctor, and any of those kind of things happen. The janitor only cleans it, after the patient have left and is done seeing the doctor, not before or during. I don't know about outside in the waiting room in the front, where the check in area is. I remember in an episode of ER, Julianna Margulies's Nurse Carol Hathaway, the head Nurse had to give a homeless patient a bath at the hospital. There are also the not so bad things nurses do, like giving the blood, watching a patient in recovery room after surgary(leave the same day type surgary), weighing the patient and taking the patient's blood pressure.
If you still don't want to be a doctor and go through all the medical school, which cost so much, and still be paying so many years after you get out. I would say think about becoming a physician assistant. My guess is this a step better then a nurse, and when a doctor is not able to be there in the same room in the ER, you can take control as the lead until he or she get there, even when they are just in the next room. That is the impression I got from ER on Gloria Reuben's Jeanie Boulet, who is a physician assistant. If you or anyone who wants more info on physician assistant, go to: http://en.wikipedia.org/wiki/Physician%27s_Assistant http://www.medicalcareerinfo.com/physician_assistant.htm
Just to let you and everyone else know, I am not in the medical field at all. So I might be wrong on some stuff.