coral beauty's are very gentile requiring a well established tank 3 months is still a bit early for them ,
as for being stung I will not lie it hurts , I also have the scares that came from it ,
always wear glasses and gloves when handling fish or coral,
this is a sting from a Bristol worm yes it was a big one he wrapped around my wrist
I was in agony almost 3 months , you'll think twice about gloves now I'm sure .