Hello,
It is important to rule out any subdural hematoma. Symptoms of subdural hemorrhage have a slower onset than those of epidural hemorrhages because the lower pressure veins bleed more slowly than arteries. Thus, signs and symptoms may show up within 24 hours but can be delayed as much as 2 weeks
It is diagnosed by a complete history and physical examination along with CT brain. A cranial MRI or cerebral angiogram can also show hematomas.
So please consult a neurologist and get yourself properly evaluated. 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 and please do keep me posted on how you are doing.
Probably you had a concussion and having Post Concussion effects. You can consult a Neuro-Otologist and Neurologist and see if you have any inner ear issues. Reason for dizziness can be very many. Get an MRI done to be safe.