Absolutely, you should go see a doctor if you become knocked unconscious! Head injuries are no laughing matter and any type of injuries sustained to your head or brain should be examined immediately. The scary thing about head injuries is you can’t see exactly how bad it may be. That is why it’s important to seek medical attention right away so the doctor can run imaging tests to diagnose what injuries you have. Specifically, if you are experiencing blackouts, severe migraines, disorientation, drowsiness and vomiting do not ignore these signs and go see a doctor.