How to know if I have a traumatic brain injury?

Go to ER ! Traumatic brain injury can have wide-ranging physical and psychological effects: no loss of consciousness, but a state of being dazed, confused or disoriented •loss of consciousness for a few seconds to a few minutes •memory or concentration problems •headache •loss of consciousness from several minutes to hours •profound confusion •agitation, combativeness or other unusual behavior•slurred speech.
Changes after injury. You will know you have had a traumatic brain injury if you have acquired problems following the injury. If you continue to have questions or need treatment, consult a neurologist or rehabilitation specialist.
Ask your doctor. There are many factors, and without telling us, we have no idea. You should ask you doctor.