If your brain has a problem it will make a noise---severe headaches, vomiting, loss
of sensation, muscle weakness etc etc. You may have short
term or
long term memory loss, if it involves a specific area of the brain concerned with memory. Do not worry. Nothing like this is going to happen. As I said earlier a man’s brain is actually quite safe. The smack is just like we hit our head against a door or something by mistake.
Relax! Concentrate on your studies. I am sure you will do well.