Girls ??Can anyone tell me if they've experienced this, the youngest s…

Girls ??Can anyone tell me if they've experienced this, the youngest son is hitting his head on the floor at 9 months old, he stands on all fours and hits his head specifically like the side of it, and against all surfaces ?‍♀️He's been scolded and yelled at and slapped a few times, nothing helps, how can I stop him from hitting his head already, there are real bumps, redness constant, what do we do about this ?and when will it pass? And also, our fontanel is closed, is that dangerous?