Hey.
I feel I need to share my story with a related group, since I have been living in constant anxiety of possible concussion symptoms for almost a year now.

I play basketball. Im around 6'1" and not small, so I often guard bigger players, constantly banging my head on people's arms, bodies.

I recieved two concussions last summer that were almost identical in that I took someone else's forehead to the side, right above ear, of my head, but on opposite sides. I wasnt very experienced in the sport back then and this probably contributed to the strange injuries.

They were very minor, I did not pass out. But after the first one I began having trouble driving and (notably) lost my car in a parking garage for a considerable period, could not sleep and became very angry.
Similar symptoms for the second. I became an unfamiliar person and it was truly extremely terrifying.

I got another concussion around thanksgiving, in the shower, came up and smashed the top of my head on the shower wall (tile).

Since then I have been in and out of what are possible concussion symptoms though I cannot fully tell, because i have continued playing basketball (I am passionate about the game) and continuously get knocked around in the head on defense.

possible concussion indicators are:
lack of creative drive/lost ability (art student)
lowered productivity in general
fluctuating social behavior, feelings about others.
some light sensitivity
become light headed during sustained excersize
memory loss

All of those are possible incidentals and I have anxiety and am self mindful/aware/conscious anyway.

MY QUESTION:
In the aftermath of a (very) minor concussion, is a knock on the head with a forearm or a knock in the teeth with an elbow enough to reconcuss(??) my head? even weeks after the original injury?

And will I continue to heal even through these minor knocks on the skull?

I am seriously considering a CAT scan but they are very expensive and my family is stretched thin with college tuition.

Please help.

Mitch