Your initial response after an accident will depend on how severely you’ve been hurt. If you are still in a condition to do so, you will want to document the location of the accident. This usually means taking a photograph of the scene with your phone or camera, preferably with a timestamp. Many smartphones can add timestamps to photographs through an option in the camera settings. This serves as evidence that the accident occurred, as well as providing a snapshot of the conditions in which it happened, which can help to support your case.
Outside of documenting the scene, you will want to arrange for medical attention as soon as possible after the accident. This will help for both making sure that you receive the treatment you might need for any injuries, including less obvious ones, and also provides a link between the accident and your injuries should you need to prove that they were caused by the accident when dealing with insurance or the property owner.