Hi. i'm 17 and yesterday i got hit on the side of my head with a basketball. now i have a mild headache. what should i do ?

Possible concussion: sxs: + or – loss of consciousness, headache / pressure, can't recall event, dizziness, v coordination, ringing in ears, confusion, slurred speech, nausea / vomiting & fatigue. For concussion seek medical care. Seek urgent treatment for loss of consciousness, on-going confusion, seizures, unequal pupils, recurrent vomiting, change in level of consciousness, loss of balance or difficulty walking. >