Lelma you have to know that our best advices have already been said. You should get rid off stress and don't obsess about your hair, just monitor it during the next months / years. It is too soon to know how your hair is going to do in the future. Why to be so worry? You are not able to predict if you will be balding or not and moreover you still look very good, so no sense YET.
Do you want to know your options? Your hair may little by little minituarize and start to bald at 20s (just start), you may only be NW2 at your 30s-40s and start balding after (as your father's side) or you could mantain good hair for almost your whole life... (your mother's) Who knows? It is true that your genes play big role but you don't know if you have inherited your father's or your mother's ones. So you see there is no reason to be worry about your hair yet, it is different when boys of your age bald aggresively and they become bald at early 20s. That worry is pretty understandable, but It is absolutely not your case.
A little % of balding has to do with hair care, nutrition, stress, etc. You could focus only on that at the moment in order to slow somehow the process and monitor.
Regarding your hairline and pictures you have to know that even a hairline which is not balding can be assymetric, that is most hairlines are not completely lineal. A spot or curvature could be a balding sign or could be not.
I'm not saying this forum is not for you, your doubts are very welcome and we are happy to help you. However I want you to relax and try not to get much involved in this balding world full of contradictional information, lots of treatments with questionable effectiveness in some cases and so. Because right now your hair is great.
Just be worry about your life, girls, studies... And regarding hair (since you have lot of it) start to care about it, monitor its evolution months after months. If you have doubts we can try to solve it, but if somewhen you think this is real you should go to a dermatologist.
Monitor to catch it soon but don't get obsessed.