Concussion… I have had concussion more times than I can remember though not recently. Years of battering my head on the rugby pitch ending up in hospital for 3 days with a cracked skull finished my rugby career before it had really got going.
To be honest with you, I can't really remember how I felt, it seemed to vary from dazed, battered, sick, headachy and generally crap. The worst time as a kid ( I cracked my head while farting about on a frozen pond in break time) I wandered around school for an afternoon with no concept of time, no idea where I was or who anyone was. It was pretty pants.
It just always sort of went away… it really was that vague. Every time was different and every recovery was different too.