Unless you need emergency medical treatment, do not leave the scene of the accident until you contact the police and they arrive on the scene. File a report with them, collect information from the drivers and other cyclists involved in the accident, and identify any eyewitnesses to the event besides the parties involved. Once you are done, go to a hospital and have a doctor examine you. Make sure to note the injuries you sustained, the medical expenses relating to those injuries, and the mental stress the accident has placed upon you. All of this information will be useful for documenting your claims to both your health and auto insurance providers. If you do not have auto insurance coverage or chose an unlimited right to sue with your auto insurance policy, you will also want this information if you proceed to sue liable parties. Speak with a legal professional and provide them this information, so that they may track down further information for your case and analyze how much compensation you are due to recover in case of litigation.