Anton, I emphasize as well since I once dislocated my knee. Emergency rooms are quickly becoming inefficient due to the volume of people seeking attention and the tendency for doctors and nurses to offer you a "next please" diagnosis. If the pain does not improve or the arm gets swollen definitely go back to the hospital. It may not be a break but you could have damaged some blood vessels. Try using some ICY-HOT and that should make moving your arm a little more comfortable. Jeremy