Is there something wrong with me?

The other day I was walking home and had to cross the rode and looked both ways and starter walking across the road and then some car came out of no where and nearly hit me, when i moved of the road the driver sped up the road at at least 60km in a 40km zone. The last couple of days at school I keep on having a constant replay like every time I hear a car of when someone mentions it. It is driving me batty and can't concentrate when studying for my exams. The other day the my cooridinator ask me if i was okay i didn't say anything. Is there something wrong with me.