I banged top of my head into a 4x10 beam , saw stars & fell to the ground, was a bit affected for a week or 2, finding the right words at times was my main symptom.
Symptoms might depend on where we hit our head.

But give it a bit of time and minimize things that trigger actual symptoms.
Sort out the worry from the real things..
Worrying is wasted time & effort..and drains you..