Yesterday, at gymnastics practice, i fell and hit the back of my head off of the floor. This floor was kinda soft, but it still hurt when I hit my head. My head hurt for a few minutes after that, but then the pain mostly went away. I kept practicing and I still felt pretty good, just a very slight head pain. Today, I was volunteering for something and I had to stand up for hours with only a few breaks, and I got a small pain in my head/eyes and I slept for a few hours afterwards. Do I have a slight concussion? Should I go to the doctor?