Evol,

Welcome to NeuroTalk.

You did not suffer a concussion hitting a pillow or pile of clothes with your head. Not even a sub-concussive impact.

Your head suffers far greater impact from just walking. Steps and stairs cause even more impact without danger. Coughing, sneezing, turning your head to the side, and more normal movements have more forces.

I'm confused. You said "I wonder how much I might have imagined or could come from an infect, which I feel from time to time. Also I had slight spacial disorientation from at most subconcussive hits, but not so presistent." " triggered by smartphone usage"

Can you explain what you mean?