MY 3 YEAR OLD SON HIT HIS HEAD REALLY HARD ON SUNDAY AT NIGHT. HE CRIED FOR A WHILE, THERE IS NO BUMPS ON HIS HEAD EITHER. HE IS ACTING NORMALLY SINE THEN. BUT MONDAY, HE WAS VERY FUZZY AND CRYING A LOT. I AM VERY CONCERNED OF THE HARD HIT HE GOT ON HIS HEAD AND A LACK OF ANY INJURY, SUCH A BRUCE OR BUMP, BLEEDING, ETC . WHAT SHOULD I DO?