Hi,
Welcome to the ehealth forum and we are glad to lend you a helping hand.
From the symptoms that you have mentioned, the possibility of post concussion should be ruled out. Symptoms can appear immediately, or weeks to months after the initial injury. Symptoms include headache, dizziness, memory problems and psychological and behavioral problems.
There is no definite treatment but antidepressants and psychotherapy are often useful.
You should discuss this possibility with your neurologist.
It is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided. For exact diagnosis, you are requested to consult your doctor. I sincerely hope that helps. Take care.