If you were involved in a accident, gather contact and insurance information, take photos, collect witness statements, and contact police. However, if you are injured, then you need to call the police and get to a hospital. You should only stick around the scene if you are not seriously hurt and once everything is wrapped up, go to the hospital.
After your insurance company or the defendant’s insurance may contact you to offer a settlement. This will usually be a lower than you deserve, you should not accept it. Instead, you should contact a personal injury attorney