23, should I be worried??

[Cephe1d]

I've always had thick hair in general, but have always had a small patch of less hair on my temple since the age of like 12. Should I be worried?

Spoke to the GP today, who said that it's nothing to be too worried about and just a general receding of the hairline. Some previous posters on their regrets of not taking finastride earlier make me think I should look into it?

The second picture is my hairline before a recent haircut.