hi i play football and i hit someone and i got a mild headache throughout practice. this pain on a scale from 1 to 10 it was like a 1 or 2 for the next few days. it didn't really bother me at football. i also tend to WORRY ALOT and i was constantly shaking my head to see how the pain is. then the pain went to a 5 or 6 when i shook it particuarly on my right side. A few days after the injury i notice that my left pupil was smaller than my right. Now my left seems normal and my right seems bigger. Then at other times they are the same size. The past 2 days the headaches were like a 1 or 0 when i shook my head. Any ideas on what could be wrong? Thanks