... couldnt walk for an hour. I didnt even know i had a concussion until this happened and than i put to n to together. I realized i had hit my head toward the bak on a surfboard. I was told it was probably just a mild concussion and to give my self complete rest for two days and after thag i can do normal stuff. The thing is ive been resting the whole week and when i move around i still get off balance and lightheaded. Is this normal or should i go back to the docter? It worries me because supposedly it was a mild concussion but im having intense side effects even days after rest