Incident – Request for help

Hello, someone drove me up Friday and I asked a few questions : First of all the facts : Dangers on the highway, and then traffic jam occurred, so the Fzg before with braked and I also (somewhat stronger, but no full braking or similar) came to stand – distance to the front about 10 meters – warning flashing light was already there I had seen the traffic jam is. About 1 minute later someone hit me because his Fzg had no ABS and blocked (his statement) . This happened at a corresponding speed (so guessed so 30km/h – 60km/h) and has pushed me up to the other, so that I touched the bumper slightly from the front man and maybe a very minimal scratch was created. (Not seen, with me no damage, with the front man also no visible damage, so it has also the police noted) The police asked us nothing but only pieces of paper where we should exchange our data, because they want to that we get off the highway quickly. Jetz my question, if the one in front of me should have something (damage) pays the insurance of the vehicle driving me up,or ? (I don’t see it at all that my Volkasko goes up, because in no way a co-indebted/indebted meets me because I had enough of a distance and also duly warning light) I was in the emergency room yesterday evening and was ruffled, etc., but they don’t issue a medical certificate but s I was supposed to contact the family doctor on Monday. How does that go on ? Could you give me n some tips about how to run, what kind of claims I can make (costs,pain money, lawyer technical) etc.. I have unfortunately never experienced such a thing and am at a loss. I have not talked to any party yet and also with no insurance. What about my car this is ever an accident vehicle ? expert opinion ? Maybe also a few basic judgments or things that would help me since I I am not covered by legal protection and cannot afford a lawyer. Thank you very much