If you don't have any health insurance or other insurance and need to visit the emergency room your out of pocket costs could be as high as $1,233.00 just for the emergency room visit and then there's additional costs for X-Rays, Tests, medicine and anything else that might be needed and you could be looking at $4,000.00 or more to visit the emergency room and get treated.
Only go to the emergency room if it's really needed.
Be sure your condition is a real emergency otherwise wait to go into a regular clinic during regular hours or maybe see if there is an after hours or 24 hour clinic around your area to visit instead.