What should i do if i think i had a concussion?

Be evaluated.: Seek medical attention if you believe you have a concussion. Symptoms of a concussion can include: headache, nausea, vomiting, confusion, blurred vision, slurred speech, weakness, feeling dazed, numbness, lack of coordination, problems with short term memory, dizziness as well as repeating things over and over. You can develop a concussion with or without loss of consciousness. Take care.