Could my old head injury still be affecting me?!

Could my old head injury still be affecting me?

I'll go to a doctor, but Im just curious with others opinion:
About two years ago I was in a very bad accident which left me in trauma for a few days with several brain contusions and a horrible concussion which took months it seemed to fade..however, since then
Without notice somedays I have a dull, stuffy achy migrane which nothing fixes, which in turn makes me cranky, other days that doesn't hapen but ill have a problem focousing, both visually and mentally. All things which reminds me of a concussion almost... I have a hard time with memory too, not with past memories- but I can easily forget why I walked into a room or something that was said to me moments ago that happens so frequently it not only irritates me but those around me. Usually when these things happen it follows with an unquenchable thirst, ill go through several water bottles, virtually inhaling them. I also have a lack of feeling a need to sleep anymore... anyone else suffer this? what could it be

2 weeks ago
note: these symptoms have been going on for awhile, neither decreasing or increasing in severity.

There can be long term effects from a concussion. More worrisome than that, a head injury can sometimes weaken structures that can cause problems later. I would change my mind if I were you and see a doctor ASAP. I can think of several possible events that could be serious. I strongly advise you to see an MD.