My baby fell and hit his head how long do I have to keep him awake for?

Yea he had a knot I can’t tell now cuz we are in the car

Signs of a concussion appear within 3 hours usually that’s what my sons pediatrician told me

He is acting pretty normal, talking,

walking normal,

@babymamaof4, ok.

@fakoff.diehexe, no he did not

Just watch him and use an ice pack of possible