Katie, if there is one thing my boss told me when I worked in the insurance business years ago, it was "if you're involved in a accident, write it all down as quickly as you can, and draw sketches". I do recommend you do this - it's all fresh in your mind at the moment but if - as it can - it drags on and on, it's very easy for you to forget the fine details of exactly where you were and who did what, if you are questioned at a later date. Get it all on paper, as much detail as you possibly can, and keep it safe.