As someone who knows someone who was killed as a pedestrian crossing the road…it is not your fault. Don’t forget that fact. Trauma does weird things to our brains even without head injury. Don’t feel guilty about pursuing a lawsuit either. It was the other person’s responsibility to be watchful and follow traffic laws…and they failed. Repercussions are normal in such circumstances even if it is an honest mistake. Hope that you don’t feel any more pain or have more unseen issues. Sometimes these things take time to surface. If you feel unexplainably sleepy at any point, don’t hesitate to see a doctor. Sometimes head trauma isn’t obvious. Wish you the best and hope you recover quickly and thoroughly.