A quietly bumped deer saunters off quietly without snorting to alert other deer of danger. You can evaluate your impact on a deer by studying its body language. If they can’t pinpoint the threat, they’ll likely return sooner than if they saw or smelled you. Spooked deer will return to their bedding area, but when they return depends on how much the intrusion frightened them.
Stay still for a moment afterward to see if the deer comes back.