I am 21 year old. And I been hurted in my head a year ago when I was travelling in a car so a big jerk came and the car jerk on that so my head was hurted from the car roofs and that time it was just the pain for hours. But after a week it started creating problems like I feel that my concentration and memory level is been decreased. It has been year passed what should I do. It could be a blood clot or what.