18 year old balding/cowlick?

Hello everyone. I have turned 18 recently and I started to notice a weird patch at the back of my head. It is fairly new to me i would say. I have been panicking because of it lately and I am not sure if I am actually balding. Does it look like androgenic alopecia? Can anyone please help me figure this out. Please not that the pictures posted are when i part my frontal and back sections of my hair apart. I do not normally do so and i just comb my hair to the back, so no spots are visible in that case. Thank you in advance

That looks like MORE than just a cowlick, to me.