I was laying on the floor with my fingers resting underneath my head to provide comfort and then for some reason I unconsciously decided to move my fingers from underneath my head and my head hit the floor. Only an inch of impact which would be height of my fingers. I didn’t really think anything of it but it did hurt. Next day I was experiencing nausea and 5 days later nausea came up when playing hockey and I have a sore spot where my head hit the floor. Concussion??