Should I tell my coach or no?

El
So I am 4week 1 day. About to play sport. My coach holds all our medical info in the super unlikely case that we get an injury. 
I don't want to be telling people yet. I don't want to jinx it. 
But I am considering telling my coach just incase I do get an injury and can't tell the first aiders. 
I don't know though. Also very close friends with my coach and she is totally in my friendship circle so I don't want to make her have to keep my secret if I don't have to! 

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