whvander,

Welcome to NeuroTalk.

From what you describe, nobody can say if this was another concussion. You may have aggravated your previous concussion. You make it sound like your board hit you in the head. Is that correct ?

You should be wearing a helmet. At least for the next 6 months.

Concussion symptoms often get better for a few days then return, often with a vengeance of the person decided to resume normal activities too soon. It takes about two weeks of being symptoms free before one can start to think their symptoms have truly resolved.