Am I Receding or just mature hairline????? HELP

[SmackMyHairUp]

For about a year and a half I've noticed I'm Receding, but it hasn't got dramaticly worse since I first noticed it. However, ever since noticing this it has gotten me quite down in numerous of ways. Firstly, I don't know what hair cut I can have, as most will look stupid with my hairline, and secondly, I am only 17 years old.

Here are some pictures, please help me in terms of slowing this hair loss down or even regaining the hair? I shouldn't be stressing about this at my age, and is very depressing thinking about/looking at it.

 

[hairmester]

probably balding considering the amount of recession you already have at 17 years of age