This is a very good question as this is the time post-concussion that one would expect to be much better, and getting on with one's life. I think it would be a good idea to be evaluated by your family doctor and possibly a neurologist as well, to make sure there is nothing else going on, and to ascertain what deficits you might still have that may linger on.
Keep in mind that some cases of post-concussion syndrome are prolonged for up to 6 months to a year. In some individuals there may be permanent residual issues, including chronic headaches, dizziness, tinnitus, memory problems, slowing of thinking, word finding problems, even personality changes. The brain is a very delicate organ and its circuits can be easily damaged and take a long time to repair or develop work-arounds. Neuropsychiatric testing can help to elucidate what deficits you might have so that you can work on them. A neurologist can set this up for you.