Is my hair thinning?

[Balderz]

Hello,
I'm about 21 and recently I started noticing what appears to be the beginning of a slight thinning phase in my crown hair.

I really hope it's maybe just a hair whorl and I'm being overly paranoid but i'd appreciate if you could look at it and tell me what you think.

Two pictures are attached.

Thank you!

[hanginginthewire]

Looks to be thinning to my eyes : (