I do get it. I started balding at the same age as you. Actually, I had a solid NW2 going at 17. I could buy beer at age 17, my friends telling me that 'my hairline makes me look mature' while giving me their money to buy sauce. Yes, I hated it back then, but in the years after I realized what fool I was and how wasteful self pity was in my life.
All I am saying is that you have two choices:
You can be a 19 year old college student who is balding, and has let it overcome all other joy in his life, hides in a cave, under a baseball cap, and dwells on how miserable it is.
OR
You can be a 19 year old college student who is balding, but has refused to let it control your life. You have goals and aspirations independent of your male pattern baldness condition, you are extroverted, aggressive in your social life, enjoying this precious young time in your life to the fullest.
All I am saying is that you can allow yourself to be person 1, or person 2. Your call.
YES, be concerned about hairloss. And YES, take your treatments, as I do. But letting it preoccupy and waste your life by flooding you with paralyzing self-pity hurts nobody but yourself. It is nothing more than a waste of time. Don't waste your time, or your life. LIVE. And live with soul! Revel in your own life, male pattern baldness notwithstanding.
There are 19 year olds coming home from Iraq with limbs missing. I just saw a blurb on tv about one of them who got a prosthetic limb, and actually returned to his unit! After that term, he is now working part time at Walter Reed, counseling soldiers with severe injuries, oh, and running competitively in 10Ks on his free time. This guy is amazing, he has simply refused to let the loss of his limb reduce the awesomness in the way he lives his life. Despite the fact that this guy has a fake leg, he just oozes charisma because he has an unbreakable self confidence.
This is a challenge. Whether you let it turn you into a cowering pussy, or you handle it as just another everyday challenge that you don't let affect the quality of your life is a choice for you to make.