What is the fairy realm?

Hi all! I don't know if this is the right subreddit to ask this question but here I go.

When I was very young, I would brush the side of my cheek a lot. I also happen to have a large scar there from when I was a newborn.

My mom got a reading done by someone and she had told her that I was from the fairy realm and the reason I brushed my cheek a lot was because they were tickling me (whatever that means).

Can someone please explain this to me? If it helps to know me better, I am a very emotional person who has gone through a lot of stuff very early on in my life that has given me PTSD.