i stood up and hit the back of my head against the sharp corner of a sink. i was really really tired and went to bed shortly after, was coherant throughout the night as i was setting my alarm constantly to check on my one year old daughter. the back of my head is swollen pretty notiable and i can feel it and it does not feel normal, it is VERY tender, when i turn my head it is slightly discomfortable. i have had no headaches or dizzines or any other symptoms of any kind, the only thing is random sharp pains that last a second, swelling and tenderness. this happened either yesterday or the day before, i dont quite remember but i feel kind of weak.