I was in a fender bender about a week ago, was rear ended at a red light. Called pd just so i could get a report to file, no vis damage, no inj, but the other veh went under my car and im one of those people who like a spotless perfect car. Cop started out to be a douche also about there was no damage he wasnt going to do a report and if we wanted to get each others info we could do it ourselves. argued with him for a min untill i finially got him to give me a driver info exchange form, (you can only get them from pd where i live).
Told the other driver i wasnt going to file the report with the state unless my mechanic said there was damage, she was nice and apologised multiple times, no one was sited because , per the ofcr, no one was hurt and he didnt want to worry about it and there was no damage. When i asked if he had xray vision and could see under my car and see if there was any damage underneath, or was a mechanic and could tell me that the force of the impact didnt break any of the collision springs (or whatever they are called) on the inside of my bumper. it was then he noticed my uniform (was headed home from work). He started to back step and i told him all i wanted to begin with was a a driver exchange form to begin with and if we all treat each other with respect from the get go then maybe those we meet in the field will be respectful too. (hopefully he caught on) needless to say i never filed the report because the driver was actually sorry and admitted that she wasnt paying attn, plus there ended up being no damage.
if you dont really care about the damage and the person who hit you and apologized then i wouldnt really worry about it. but if they didnt and you do care about the damage, report it. but also remember that it will up your insurance too just because you were involved in an accident, no matter who was at fault. but awesome app!!
You did experience high g-forces as result of the crash. I am sure you head some headache at night as result of this accident...etc 