So, how bad of a concussion was this?

Alright so a long time ago, I got a concussion from some youth group sledding thing, I was at the front of some snake thing, the kid at the back of it swung around, bam I got a boot to the head (and apparently a footprint of it).

The next thing I remember (I guess, I have a bad memory for stuff that happened a long time ago anyways, at least if it wasn’t very significant) is “waking up” in someones car waiting for my mother/an ambulance, not sure.

I say “waking up” because I apparently walked up the hill, talked with someone and got them to call, and then I got in the car, then I guess I just snapped back into record mode or something lol.

I was wondering since I never really asked, how bad is that sort of concussion considered to be? I did get a CT scan, but with the smaller machine that rolls around on wheels.