Not sure if I'm balding. Please help.

[Shiromatsu]

I've had this bald spot on my head for quite a few years (I'm 19 right now), and didn't pay much attention to it until a couple of people pointed it out last year and warned me that I might be balding. It has also gotten slightly worse but not too noticeable over the past few years. Does this look natural or is this the start of me balding? (Excuse my ignorance)

https://imgur.com/a/k7mmSM0

https://imgur.com/a/rJUy8pJ

https://imgur.com/a/JvIdU69

[mrclean]

There are no before pictures but the last picture looks like there could be some loss. Start rogaine...you can buy the liquid equate brand from walmart for about 20 bucks for a 3 month supply and it is very good quality.