They were a little bit concerned about it.
As far as I know, I was the only person training at that academy at the time who ever had a concussion. They just kind of sent me on my way. It wasn't that it was normal, but it was “normal-ish” to be in pain after practice. That just kind of came along with the sport, I'd say. Nobody was overly concerned until about a week later, when I couldn't function.
At the time, there wasn't a lot of concern. Nobody said I should go to the hospital. There was nothing like that. Nobody said on the field that I wasn't okay and that I needed to go to the hospital or go home. Nobody had that concern until a week later, when my symptoms made me non-functional.