Take photos and exchange information. Take plenty of pictures and write down all pertinent information — like the location and time of the accident — while it's still fresh on your mind. If another person was involved in the mishap, exchange contact details and insurance information, and make sure to file a police report.
See a doctor. Even if your injuries appear to be minor, it's a good idea to have a record on file if any medical issues develop after the accident.
Determine whether you need to file a claim. If you weren't at fault in the accident, the other person's insurance may cover your medical and bicycle repair expenses. However, you may need to file a claim with your insurance if you were at fault.