19 and possibly receding/maturing

[Godawgs1999]

Hello, my name is Mark and i'm 19 years old. I'm really worried about the possibility of my hairline receding, its for sure always been uneven, but ever since I turned 18 I feel like it may have gone back at the temples. Of course I may just be paranoid, I tend to obsess over my hair appearance and what not a lot. Here are some pictures.
left

front

right

front a few weeks ago

18

17

the last 2 are old pics, the first from when I was 18 and the second from when I was 17. They're kinda trash but they show how its always been uneven. My moms dad had a decent head of hair until his 50s I believe, my dads dad also still kinda has a decent head of hair in his 70s, and so does his father (my great grandfather), who is in his early 90s. However, my dads hairline started receding in his late 20s, so i'm just not sure. One thing I considered is the amount of stress I've been under with school starting back might be partly to blame. You can see in the fourth pic, which is from a few weeks ago, it looks a little better than the second picture, which is tonight. Any thoughts? also sorry I cant figure out how to rotate them.

[mrclean]

It is really hard to tell if you lost anything. I wouldn't worry about it for now but keep some good pictures in a file that you can compare in a year.