Replying to Memory lapse?

so i know there are plenty of concussion threads, but this is kinda weird to me...
So its my first concussion...
I over shot a jump and was backseat so i back slapped and whipped my head into the snow. Basically, i have no recollection of anything for the next half hour. Apparently we took another run, i got lost, my friend called me and i talked to him, then we made our way down to patrol. I have zero recollection of this and thought we just went straight in after i hit my head. I didnt get a headache, and i felt a little bit car sick afterword, but other than that i feel fine. (and a sore neck from the whip) so im wondering, am i fine? i skied easy the next two days, didnt fall (just on groomers) and am now taking 2 days off. This is my first concussion, even tho it is a self diagnosis, due to the amnesia.. is this weird? or normal. Thanks!