When I was in nursing school the Emergency Dept terrified me and I knew I never wanted to work there. I have now been an ED RN for the last 8 years, most of it even being charge nurse.
I think my expectations of what went on in the ED was exaggurated, and I can only assume that is what is going on with you as well. If you think you want to pursue nursing in a pediatric ED you can see what it's like by volunteering there. Many ED's use volunteers to clean rooms, bring patients water or various other tasks that do not involve patient care. But it would give you an idea of what it would be like to work there.
If you want to get a foot in the door, doing an MA program or EMT program would help you get a job in an ED as a tech, which may or may not give you an advantage to getting a job as an RN. Some hospitals flat out don't hire new grads into the ED and some do with a lengthy residency program.