Hello, a few days ago, I sustained a head injury while playing soccer. I was knocked unconscious for around 30 seconds. Before regaining consciousness, several witnesses said that I had a seizure like motion for a few seconds and woke up. I was treated and released from the hospital. I received a CT scan and told that everything was fine. However, several days later, things are not normal. I am having sharp, searing pains in the back of my head, and I find myself becoming very dizzy and losing balance while doing normal day to day activities such as standing up or even getting dressed. Should I visit my doctor?