Man, first time out and you get afflicted by elf! That’s just bad luck.
May Moradin relieve you of your burden!
Does it hurt? The forest flitterings? The sparkles?
The only thing I can think to suggest, maybe go to your mountain’s priest-guild. I am not too versed on their magics but I am positive a little God-whispering will get you changed back good as new, before anyone notices, hopefully.
Or, at the very least, we can hope a wee baddie takes you out and saves you from the misery of being an elf. Far better at Moradin’s table anyway, am I right?