Open Question: I hit the back of my head about 2 weeks ago. I hit the back right part of my head.?

I was drunk one night and I manage to hit my head twice (back part). I couldn't tell if I had a concussion, cause I was too drunk. I manage to somehow get myself into bed. I manage to wake up 6 hours later fully alert but with tenderness at the back part of my head. It has been 2 weeks since the incident. I am wondering if I should still worry about internal bleeding? As of now I have bit tenderness when I rub my head (hard, like I am scratching my head) at the spot of where I hit it. Should I be concern?